DAP4 Data Request Form WI_SkyTEM_2021.h5
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OPeNDAP DAP4 Data Request Form

dataset: WI_SkyTEM_2021.h5
dmr

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Global Attributes
no attributes
Global Dimensions
None
Variables
survey(Type is Group)
  • attributes
    • title: SkyTEM Airborne Electromagnetic (AEM) Survey, Northeast Wisconsin Bedrock Mapping (Type is String)
    • institution: USGS Geology, Geophysics, and Geochemistry Science Center (Type is String)
    • source: SkyTEM raw data, USGS processed data and inverted resistivity models, and depth to bedrock surface (Type is String)
    • history: (1) Data acquisition 01/2021 - 02/2021 by SkyTEM Canada Inc.; (2) AEM and magnetic data processing by SkyTEM Canada Inc. 02/2021 - 03/2021; raw and minimally processed AEM data, and processed magnetic data, received by USGS from SkyTEM Canada Inc 03/2021; Minimally processed AEM data exported to netCDF /linedata/0 group 11/2021; (3) Minimally processed binary data and system response information received from the contractor were imported into the Aarhus Workbench software (v 6.0.1.0) where data were processed by USGS 03/2021 - 06/2021. Processed AEM data exported to netCDF /linedata/1 group 11/2021; (4) Processed data were inverted in Aarhus Workbench software using laterally constrained inversion to recover 40-layer fixed depth blocky resistivity models by USGS 03/2021 - 06/2021; Inverted resistivity models exported to netCDF /linemodel/0 group 11/2021. (5) Resistivity models were imported into the Geoscene3D software (v. 12.0.0.680) and points were generated at the first depth where resistivity exceeded 325 ohm-meters. These points were visually inspected and manually adjusted in selected areas to produce an AEM-derived estmiate of the elevation of the top of bedrock by USGS together with WGNHS 06/2021 - 07/2021. Points were exported to netCDF /linedata/2 group 11/2021. (6) Bedrock elevation points were interpolated using kriging in Geoscene3D software to produce a regular bedrock elevation grid 07/2021. (7) A bedrock depth grid was calculated in QGIS software (v. 3.14.1-Pi) by subtracting the bedrock elevation from land surface elevation. (8) Bedrock elevation, bedrock depth, and SkyTEM-provided magnetic grids were aligned to a common 100m x 100m grid and exported to netCDF /griddata/0 group 11/2021. (Type is String)
    • references: Minsley, B.J, Bloss, B.R., Hart, D.J., Fitzpatrick, W., Muldoon, M.A., Stewart, E.K., Hunt, R.J., James, S.R., Foks, N.L., and Komiskey, M.J., 2022, Airborne electromagnetic and magnetic survey data, northeast Wisconsin (ver. 1.1, June 2022): U.S. Geological Survey data release, https://doi.org/10.5066/P93SY9LI. (Type is String)
    • comment: This dataset includes minimally processed (raw) AEM and raw/processed magnetic data provided by SkyTEM, fully processed data used as input to inversion, laterally constrained inverted resistivity models, and derived estimates of bedrock depth. (Type is String)
    • summary: Airborne electromagnetic (AEM) and magnetic survey data were collected during January and February 2021 over a distance of 3,170 line kilometers in northeast Wisconsin. These data were collected in support of an effort to improve estimates of depth to bedrock through a collaborative project between the U.S. Geological Survey (USGS), Wisconsin Department of Agriculture, Trade, and Consumer Protection (DATCP), and Wisconsin Geological and Natural History Survey (WGNHS). Data were acquired by SkyTEM Canada Inc. with the SkyTEM 304M time-domain helicopter-borne electromagnetic system together with a Geometrics G822A cesium vapor magnetometer. The survey was acquired at a nominal flight height of 30 - 40 m above terrain along parallel flight lines oriented northwest-southeast with nominal line spacing of 0.5 miles (800 m). AEM data were inverted to produce models of electrical resistivity along flight paths, with typical depth of investigation up to about 300 m and 1 - 2 m near-surface resolution. Shallow resistivity transitions were used to estimate depth to bedrock across the survey area. (Type is String)
    • content: survey information (group /survey), raw data (group /survey/tabular/0), processed data (group /survey/tabular/1), inverted resistivity models (group /survey/tabular/2), bedrock elevation points (group /survey/tabular/3), gridded magnetic and bedrock maps (group /survey/raster/0) (Type is String)
    • created_by: gspy==0.1.0 (Type is String)
    • conventions: CF-1.8, GS-0.0 (Type is String)
  • survey_information(Type is Float64)
    • attributes
      • _FillValue: NaN (Type is Float64)
      • contractor_project_number: 20022 (Type is String)
      • contractor: SkyTEM Canada Inc (Type is String)
      • client: U.S. Geological Survey (Type is String)
      • survey_type: EM/Mag (Type is String)
      • survey_area_name: Northeast Wisconsin Bedrock Mapping (Type is String)
      • state: WI (Type is String)
      • country: USA (Type is String)
      • acquisition_start: 20210117 (Type is String)
      • acquisition_end: 20210207 (Type is String)
      • survey_attributes_units: SI (Type is String)
  • coordinate_information(Type is Float64)
    • attributes
      • _FillValue: NaN (Type is Float64)
      • wkid: EPSG:3071 (Type is String)
      • authority: EPSG (Type is String)
      • vertical_crs: NAVD88 (Type is String)
      • crs_wkt: PROJCRS["NAD83(HARN) / Wisconsin Transverse Mercator",BASEGEOGCRS["NAD83(HARN)",DATUM["NAD83 (High Accuracy Reference Network)",ELLIPSOID["GRS 1980",6378137,298.257222101,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4152]],CONVERSION["Wisconsin Transverse Mercator 83",METHOD["Transverse Mercator",ID["EPSG",9807]],PARAMETER["Latitude of natural origin",0,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude of natural origin",-90,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale factor at natural origin",0.9996,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False easting",520000,LENGTHUNIT["metre",1],ID["EPSG",8806]],PARAMETER["False northing",-4480000,LENGTHUNIT["metre",1],ID["EPSG",8807]]],CS[Cartesian,2],AXIS["easting (X)",east,ORDER[1],LENGTHUNIT["metre",1]],AXIS["northing (Y)",north,ORDER[2],LENGTHUNIT["metre",1]],USAGE[SCOPE["unknown"],AREA["USA - Wisconsin"],BBOX[42.48,-92.89,47.31,-86.25]],ID["EPSG",3071]] (Type is String)
      • proj_string: +proj=tmerc +lat_0=0 +lon_0=-90 +k=0.9996 +x_0=520000 +y_0=-4480000 +ellps=GRS80 +units=m +no_defs +type=crs (Type is String)
      • geographic_crs_name: NAD83(HARN) (Type is String)
      • grid_mapping_name: nad83(harn)_wisconsin_transverse_mercator (Type is String)
      • _CoordinateTransformType: Projection (Type is String)
      • _CoordinateAxisTypes: GeoX GeoY (Type is String)
      • reference_ellipsoid_name: GRS 1980 (Type is String)
      • inverse_flattening: 298.25722210100002 (Type is Float64)
      • semi_major_axis: 6378137. (Type is Float64)
      • semi_minor_axis: 6356752.3141403561 (Type is Float64)
      • prime_meridian_name: Greenwich (Type is String)
      • longitude_of_prime_meridian: 0. (Type is Float64)
      • latitude_of_natural_origin: 0. (Type is Float64)
      • longitude_of_natural_origin: -90. (Type is Float64)
      • scale_factor_at_natural_origin: 0.99960000000000004 (Type is Float64)
      • false_easting: 520000. (Type is Float64)
      • false_northing: -4480000. (Type is Float64)
  • flightline_information(Type is Float64)
    • attributes
      • _FillValue: NaN (Type is Float64)
      • traverse_line_spacing: 800 m (Type is String)
      • traverse_line_direction: nw-se (Type is String)
      • tie_line_spacing: n/a (Type is String)
      • tie_line_direction: n/a (Type is String)
      • nominal_terrain_clearance: 30 m (Type is String)
      • final_line_kilometers: 3170 km (Type is String)
      • traverse_line_numbers: 100101 - 115201 (Type is String)
      • repeat_line_numbers: 920001 - 920006 (Type is String)
      • pre_zero_line_numbers: n/a (Type is String)
      • post_zero_line_numbers: n/a (Type is String)
  • system_information(Type is Float64)
    • attributes
      • _FillValue: NaN (Type is Float64)
      • electromagnetic_system.instrument_type: skytem 304M (Type is String)
      • electromagnetic_system.data_normalized: True (Type is String)
      • electromagnetic_system.number_of_transmitters: 2 (Type is Int64)
      • electromagnetic_system.number_of_receivers: 2 (Type is Int64)
      • electromagnetic_system.skytem_skb_gex_available: True (Type is String)
      • electromagnetic_system.reference_frame: right-handed positive down (Type is String)
      • electromagnetic_system.coil_orientations: X,Z (Type is String)
      • electromagnetic_system.sample_rate: 0.1 s (Type is String)
      • electromagnetic_system.transmitter_0_label: LM (Type is String)
      • electromagnetic_system.transmitter_0_number_of_turns: 1 (Type is Int64)
      • electromagnetic_system.transmitter_0_coordinates: [[-12.64, -2.1, 0.0], [-6.14, -8.58, 0.0], [6.14, -8.58, 0.0], [11.41, -3.31, 0.0], [11.41, 3.31, 0.0], [6.14, 8.58, 0.0], [-6.14, 8.58, 0.0], [-12.64, 2.1, 0.0]] (Type is String)
      • electromagnetic_system.tranmitter_0_area: 342 (Type is Int64)
      • electromagnetic_system.transmitter_0_waveform_type: trapezoid (Type is String)
      • electromagnetic_system.transmitter_0_waveform_time: -0.0031809999999999998, -0.0031018999999999999, -0.0029843999999999999, -0.0023809999999999999, -0.0023781000000000002, -0.0023779000000000001, -0.0023776000000000001, -0.0023763, -0.00080000000000000004, -0.00072093000000000005, -0.00060344999999999995, 0., 2.9999999999999997e-08, 7.0000000000000005e-08, 2.7199999999999998e-06, 2.7999999999999999e-06, 2.9000000000000002e-06, 3.01e-06, 3.1300000000000001e-06, 3.41e-06, 4.7400000000000004e-06 (Type is Float64)
      • electromagnetic_system.transmitter_0_waveform_current: -0., -0.14066999999999999, -0.30174000000000001, -1., -0.0075094000000000003, 0.022879, 0.037669000000000001, -0., 0., 0.14063000000000001, 0.30168, 1., 0.99851000000000001, 0.98816999999999999, 0.05926, 0.032391999999999997, 0.0075094000000000003, -0.012284, -0.026411, -0.038086000000000002, 0. (Type is Float64)
      • electromagnetic_system.transmitter_0_current_scale_factor: 1. (Type is Float64)
      • electromagnetic_system.transmitter_0_peak_current: 9. (Type is Float64)
      • electromagnetic_system.transmitter_0_base_frequency: 210. (Type is Float64)
      • electromagnetic_system.transmitter_0_on_time: 0.00080000000000000004 (Type is Float64)
      • electromagnetic_system.transmitter_0_off_time: 0.0015809999999999999 (Type is Float64)
      • electromagnetic_system.transmitter_0_orientation: z (Type is String)
      • electromagnetic_system.transmitter_1_label: HM (Type is String)
      • electromagnetic_system.transmitter_1_number_of_turns: 4 (Type is Int64)
      • electromagnetic_system.transmitter_1_coordinates: [[-12.64, -2.1, 0.0], [-6.14, -8.58, 0.0], [6.14, -8.58, 0.0], [11.41, -3.31, 0.0], [11.41, 3.31, 0.0], [6.14, 8.58, 0.0], [-6.14, 8.58, 0.0], [-12.64, 2.1, 0.0]] (Type is String)
      • electromagnetic_system.transmitter_1_waveform_type: trapezoid (Type is String)
      • electromagnetic_system.transmitter_1_waveform_time: -0.069167000000000006, -0.069156999999999996, -0.069153000000000006, -0.069150000000000003, -0.069142999999999996, -0.069122000000000003, -0.069117999999999999, -0.069113999999999995, -0.069107000000000002, -0.069083000000000006, -0.068158999999999997, -0.066667000000000004, -0.066627000000000006, -0.066626000000000005, -0.066622000000000001, -0.0025000000000000001, -0.0024899000000000002, -0.0024862, -0.002483, -0.0024767000000000001, -0.0024637000000000001, -0.0024547000000000002, -0.0024510000000000001, -0.0024475, -0.0024442000000000001, -0.0024405999999999998, -0.0024158999999999999, -0.0022328000000000001, -0.0014913000000000001, 0., 6.427e-07, 8.9869999999999997e-07, 1.4267000000000001e-05, 4.0290999999999998e-05, 4.1331000000000001e-05, 4.4539000000000002e-05 (Type is Float64)
      • electromagnetic_system.transmitter_1_waveform_current: -0., -0.033579999999999999, -0.068754999999999997, -0.10992, -0.24884999999999999, -0.73516000000000004, -0.81233999999999995, -0.86553000000000002, -0.90295999999999998, -0.92188000000000003, -0.96364000000000005, -1., -0.0082123999999999999, 0.0072509999999999996, -0., 0., 0.033779999999999998, 0.0654, 0.10996, 0.23302999999999999, 0.54047999999999996, 0.74151999999999996, 0.81301000000000001, 0.86141999999999996, 0.88900000000000001, 0.90249000000000001, 0.92195000000000005, 0.93742000000000003, 0.96367000000000003, 1., 0.99561999999999995, 0.98390999999999995, 0.64739999999999998, 0.00099177000000000011, -0.011094, 0. (Type is Float64)
      • electromagnetic_system.transmitter_1_current_scale_factor: 1. (Type is Float64)
      • electromagnetic_system.transmitter_1_peak_current: 110. (Type is Float64)
      • electromagnetic_system.transmitter_1_base_frequency: 75. (Type is Float64)
      • electromagnetic_system.transmitter_1_on_time: 0.0025000000000000001 (Type is Float64)
      • electromagnetic_system.transmitter_1_off_time: 0.0041669999999999997 (Type is Float64)
      • electromagnetic_system.transmitter_1_orientation: z (Type is String)
      • electromagnetic_system.receiver_0_label: LMz (Type is String)
      • electromagnetic_system.receiver_0_orientation: z (Type is String)
      • electromagnetic_system.receiver_0_number_of_gates: 28 (Type is Int64)
      • electromagnetic_system.receiver_0_gate_center: -1.1349999999999999e-06, 3.65e-07, 2.3649999999999998e-06, 4.3649999999999997e-06, 6.365e-06, 8.3650000000000004e-06, 1.0365e-05, 1.2865e-05, 1.6365e-05, 2.0865000000000001e-05, 2.6364999999999999e-05, 3.3365000000000003e-05, 4.2364999999999998e-05, 5.3865e-05, 6.8365e-05, 8.6365000000000004e-05, 0.000108865, 0.00013686500000000001, 0.00017236500000000001, 0.000217865, 0.00027486500000000001, 0.00034686500000000002, 0.00043786500000000001, 0.00055186500000000002, 0.00069586500000000005, 0.00087736499999999996, 0.0011058649999999999, 0.0013943650000000001 (Type is Float64)
      • electromagnetic_system.receiver_0_gate_width: 5.7000000000000005e-07, 1.57e-06, 1.57e-06, 1.57e-06, 1.57e-06, 1.57e-06, 1.57e-06, 2.57e-06, 3.5700000000000001e-06, 4.5700000000000003e-06, 5.57e-06, 7.5700000000000004e-06, 9.5699999999999999e-06, 1.257e-05, 1.56e-05, 1.9599999999999999e-05, 2.4600000000000002e-05, 3.0599999999999998e-05, 3.96e-05, 5.0599999999999997e-05, 6.2600000000000004e-05, 8.0599999999999994e-05, 0.00010060000000000001, 0.00012659999999999999, 0.0001606, 0.00020159999999999999, 0.00025460000000000001, 0.00032160000000000001 (Type is Float64)
      • electromagnetic_system.receiver_0_coil_low_pass_filter: 628000. (Type is Float64)
      • electromagnetic_system.receiver_0_instrument_low_pass_filter: 500000. (Type is Float64)
      • electromagnetic_system.receiver_0_area: 105. (Type is Float64)
      • electromagnetic_system.receiver_0_sample_rate: 10. (Type is Float64)
      • electromagnetic_system.receiver_0_txrx_dx: -13.25 (Type is Float64)
      • electromagnetic_system.receiver_0_txrx_dy: 0. (Type is Float64)
      • electromagnetic_system.receiver_0_txrx_dz: -2. (Type is Float64)
      • electromagnetic_system.receiver_0_data_type: dBdt (Type is String)
      • electromagnetic_system.receiver_1_label: HMz (Type is String)
      • electromagnetic_system.receiver_1_orientation: z (Type is String)
      • electromagnetic_system.receiver_1_number_of_gates: 32 (Type is Int64)
      • electromagnetic_system.receiver_1_gate_center: 2.8864999999999999e-05, 3.0365000000000002e-05, 3.2364999999999999e-05, 3.4365e-05, 3.6365000000000002e-05, 3.8365000000000003e-05, 4.0364999999999997e-05, 4.2864999999999997e-05, 4.6365000000000001e-05, 5.0865000000000002e-05, 5.6365e-05, 6.3365000000000001e-05, 7.2365000000000003e-05, 8.3864999999999997e-05, 9.8364999999999998e-05, 0.000116365, 0.00013886500000000001, 0.00016686500000000001, 0.000202365, 0.000247865, 0.00030486499999999998, 0.00037686499999999999, 0.00046786499999999998, 0.00058186499999999999, 0.00072586500000000002, 0.00090736500000000004, 0.001135865, 0.0014243649999999999, 0.0017883650000000001, 0.0022468649999999998, 0.0028253649999999998, 0.0035443649999999998 (Type is Float64)
      • electromagnetic_system.receiver_1_gate_width: 5.7000000000000005e-07, 1.57e-06, 1.57e-06, 1.57e-06, 1.57e-06, 1.57e-06, 1.57e-06, 2.57e-06, 3.5700000000000001e-06, 4.5700000000000003e-06, 5.57e-06, 7.5700000000000004e-06, 9.5699999999999999e-06, 1.257e-05, 1.5569999999999998e-05, 1.9570000000000001e-05, 2.457e-05, 3.057e-05, 3.9570000000000002e-05, 5.0569999999999999e-05, 6.2570000000000006e-05, 8.0569999999999996e-05, 0.00010056999999999999, 0.00012657, 0.00016056999999999999, 0.00020157000000000001, 0.00025457000000000002, 0.00032157000000000003, 0.00040557000000000001, 0.00051057000000000001, 0.00064557000000000004, 0.00079157000000000001 (Type is Float64)
      • electromagnetic_system.receiver_1_coil_low_pass_filter: 628000. (Type is Float64)
      • electromagnetic_system.receiver_1_instrument_low_pass_filter: 500000. (Type is Float64)
      • electromagnetic_system.receiver_1_area: 105. (Type is Float64)
      • electromagnetic_system.receiver_1_sample_rate: 10. (Type is Float64)
      • electromagnetic_system.receiver_1_txrx_dx: -13.25 (Type is Float64)
      • electromagnetic_system.receiver_1_txrx_dy: 0. (Type is Float64)
      • electromagnetic_system.receiver_1_txrx_dz: -2. (Type is Float64)
      • electromagnetic_system.receiver_1_data_type: dBdt (Type is String)
      • electromagnetic_system.receiver_2_label: LMx (Type is String)
      • electromagnetic_system.receiver_2_orientation: x (Type is String)
      • electromagnetic_system.receiver_2_number_of_gates: 28 (Type is Int64)
      • electromagnetic_system.receiver_2_gate_center: -1.1349999999999999e-06, 3.65e-07, 2.3649999999999998e-06, 4.3649999999999997e-06, 6.365e-06, 8.3650000000000004e-06, 1.0365e-05, 1.2865e-05, 1.6365e-05, 2.0865000000000001e-05, 2.6364999999999999e-05, 3.3365000000000003e-05, 4.2364999999999998e-05, 5.3865e-05, 6.8365e-05, 8.6365000000000004e-05, 0.000108865, 0.00013686500000000001, 0.00017236500000000001, 0.000217865, 0.00027486500000000001, 0.00034686500000000002, 0.00043786500000000001, 0.00055186500000000002, 0.00069586500000000005, 0.00087736499999999996, 0.0011058649999999999, 0.0013943650000000001 (Type is Float64)
      • electromagnetic_system.receiver_2_gate_width: 5.7000000000000005e-07, 1.57e-06, 1.57e-06, 1.57e-06, 1.57e-06, 1.57e-06, 1.57e-06, 2.57e-06, 3.5700000000000001e-06, 4.5700000000000003e-06, 5.57e-06, 7.5700000000000004e-06, 9.5699999999999999e-06, 1.257e-05, 1.56e-05, 1.9599999999999999e-05, 2.4600000000000002e-05, 3.0599999999999998e-05, 3.96e-05, 5.0599999999999997e-05, 6.2600000000000004e-05, 8.0599999999999994e-05, 0.00010060000000000001, 0.00012659999999999999, 0.0001606, 0.00020159999999999999, 0.00025460000000000001, 0.00032160000000000001 (Type is Float64)
      • electromagnetic_system.receiver_2_coil_low_pass_filter: 250000. (Type is Float64)
      • electromagnetic_system.receiver_2_instrument_low_pass_filter: 500000. (Type is Float64)
      • electromagnetic_system.receiver_2_area: 115. (Type is Float64)
      • electromagnetic_system.receiver_2_sample_rate: 10. (Type is Float64)
      • electromagnetic_system.receiver_2_txrx_dx: -14.65 (Type is Float64)
      • electromagnetic_system.receiver_2_txrx_dy: 0. (Type is Float64)
      • electromagnetic_system.receiver_2_txrx_dz: 0. (Type is Float64)
      • electromagnetic_system.receiver_2_data_type: dBdt (Type is String)
      • electromagnetic_system.receiver_3_label: HMx (Type is String)
      • electromagnetic_system.receiver_3_orientation: x (Type is String)
      • electromagnetic_system.receiver_3_number_of_gates: 32 (Type is Int64)
      • electromagnetic_system.receiver_3_gate_center: 2.8864999999999999e-05, 3.0365000000000002e-05, 3.2364999999999999e-05, 3.4365e-05, 3.6365000000000002e-05, 3.8365000000000003e-05, 4.0364999999999997e-05, 4.2864999999999997e-05, 4.6365000000000001e-05, 5.0865000000000002e-05, 5.6365e-05, 6.3365000000000001e-05, 7.2365000000000003e-05, 8.3864999999999997e-05, 9.8364999999999998e-05, 0.000116365, 0.00013886500000000001, 0.00016686500000000001, 0.000202365, 0.000247865, 0.00030486499999999998, 0.00037686499999999999, 0.00046786499999999998, 0.00058186499999999999, 0.00072586500000000002, 0.00090736500000000004, 0.001135865, 0.0014243649999999999, 0.0017883650000000001, 0.0022468649999999998, 0.0028253649999999998, 0.0035443649999999998 (Type is Float64)
      • electromagnetic_system.receiver_3_gate_width: 5.7000000000000005e-07, 1.57e-06, 1.57e-06, 1.57e-06, 1.57e-06, 1.57e-06, 1.57e-06, 2.57e-06, 3.5700000000000001e-06, 4.5700000000000003e-06, 5.57e-06, 7.5700000000000004e-06, 9.5699999999999999e-06, 1.257e-05, 1.5569999999999998e-05, 1.9570000000000001e-05, 2.457e-05, 3.057e-05, 3.9570000000000002e-05, 5.0569999999999999e-05, 6.2570000000000006e-05, 8.0569999999999996e-05, 0.00010056999999999999, 0.00012657, 0.00016056999999999999, 0.00020157000000000001, 0.00025457000000000002, 0.00032157000000000003, 0.00040557000000000001, 0.00051057000000000001, 0.00064557000000000004, 0.00079157000000000001 (Type is Float64)
      • electromagnetic_system.receiver_3_coil_low_pass_filter: 250000. (Type is Float64)
      • electromagnetic_system.receiver_3_instrument_low_pass_filter: 500000. (Type is Float64)
      • electromagnetic_system.receiver_3_area: 115. (Type is Float64)
      • electromagnetic_system.receiver_3_sample_rate: 10. (Type is Float64)
      • electromagnetic_system.receiver_3_txrx_dx: -14.65 (Type is Float64)
      • electromagnetic_system.receiver_3_txrx_dy: 0. (Type is Float64)
      • electromagnetic_system.receiver_3_txrx_dz: 0. (Type is Float64)
      • electromagnetic_system.receiver_3_data_type: dBdt (Type is String)
      • magnetic_system.sample_rate: 0.1 s (Type is String)
      • magnetic_system.resolution: 0.002 nT (Type is String)
  • survey_equipment(Type is Float64)
    • attributes
      • _FillValue: NaN (Type is Float64)
      • aircraft: Eurocopter Astar 350 B3 (Type is String)
      • magnetometer: Geometrics G822A, Kroum KMAG4 counter (Type is String)
      • magnetometer_installation: Front of transmitter frame (Type is String)
      • electromagnetic_system: SkyTEM 304M (Type is String)
      • electromagnetic_installation: Rigid transmitter frame 40m beneath helicopter, Receiver coils at rear of transmitter frame 2m vertical offset (Type is String)
      • spectrometer_system: n/a (Type is String)
      • spectrometer_installation: n/a (Type is String)
      • spectrometer_sample_rate: n/a (Type is String)
      • radar_altimeter_system: n/a (Type is String)
      • radar_altimeter_sample_rate: n/a (Type is String)
      • laser_altimeter_system: MDL ILM 300R (2) (Type is String)
      • laser_altimeter_sample_rate: 0.033 s (Type is String)
      • inclinometer_system: n/a (Type is String)
      • inclinometer_sample_rate: n/a (Type is String)
      • navigation_system: Real-time differential GPS Trimble Bullet III (Type is String)
      • navigation_sample_rate: 1.0 s (Type is String)
      • acquisition_system: skytem (Type is String)
  • tabular(Type is Group)
    no attributes
    • 0(Type is Group)
      • attributes
        • key_mapping.fiducial: Fid (Type is String)
        • key_mapping.line_number: Line (Type is String)
        • key_mapping.x: E_Nad83 (Type is String)
        • key_mapping.y: N_Nad83 (Type is String)
        • key_mapping.z: DEM (Type is String)
        • content: raw data (Type is String)
        • comment: This dataset includes minimally processed (raw) AEM and raw/processed magnetic data provided by SkyTEM (Type is String)
      Dimensions: [ /survey/tabular/0/index = 0..1356891 ] [ /survey/tabular/0/HM_gate_times_centers = 0..31 ] [ /survey/tabular/0/LM_gate_times_centers = 0..27 ] [ /survey/tabular/0/nv = 0..1 ]
      • nv[ /survey/tabular/0/nv= 0..1] (Type is Int64)
        • attributes
          • standard_name: number_of_vertices (Type is String)
          • long_name: Number of vertices for bounding variables (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 0, 1 (Type is Int64)
      • y[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: projection_y_coordinate (Type is String)
          • long_name: Northing, Wisconsin Transverse Mercator (WTM), North American Datum of 1983 (NAD83) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 379970.05885306699, 492720.47671428899 (Type is Float64)
          • _CoordinateAxisType: GeoY (Type is String)
      • HM_gate_times_centers[ /survey/tabular/0/HM_gate_times_centers= 0..31] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: hm_gate_times_centers (Type is String)
          • long_name: high moment gate times centers (Type is String)
          • units: seconds (Type is String)
          • null_value: not_defined (Type is String)
          • bounds: HM_gate_times_bnds (Type is String)
          • valid_range: 2.8864999999999999e-05, 0.0035443649999999998 (Type is Float64)
      • index[ /survey/tabular/0/index= 0..1356891] (Type is Int64)
        • attributes
          • standard_name: index (Type is String)
          • long_name: Index of individual data points (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 0, 1356891 (Type is Int64)
      • LM_gate_times_centers[ /survey/tabular/0/LM_gate_times_centers= 0..27] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: lm_gate_times_centers (Type is String)
          • long_name: low moment gate times centers (Type is String)
          • units: seconds (Type is String)
          • null_value: not_defined (Type is String)
          • bounds: LM_gate_times_bnds (Type is String)
          • valid_range: -1.1349999999999999e-06, 0.0013943650000000001 (Type is Float64)
      • x[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: projection_x_coordinate (Type is String)
          • long_name: Easting, Wisconsin Transverse Mercator (WTM), North American Datum of 1983 (NAD83) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 655026.62634304701, 732295.56263679604 (Type is Float64)
          • _CoordinateAxisType: GeoX (Type is String)
      • Mag_Filt[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: total_magnetic_intensity_filtered (Type is String)
          • long_name: Filtered total magnetic intensity data (Type is String)
          • units: nanoTesla (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 53747.900685952402, 55382.733659022699 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • Date[ /survey/tabular/0/index= 0..1356891] (Type is String)
        • attributes
          • standard_name: date (Type is String)
          • long_name: Date, yyyy/mm/dd (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • DEM[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: dem (Type is String)
          • long_name: Digital elevation model, North American Vertical Datum of 1988 (NAVD88) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 163.97374775840001, 354.67816313144499 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • E_WGS84[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: easting_wgs84 (Type is String)
          • long_name: Easting, Universal Transverse Mercator (UTM) Zone 16, World Geodetic System of 1984 (WGS84) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 394997.52030843002, 474986.49565400998 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • Diurnal[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: magnetic_diurnal (Type is String)
          • long_name: Magnetic base station diurnal variation (Type is String)
          • units: nanoTesla (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: -15.811844762342, 10.871795532308999 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • N_WGS84[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: northing_wgs84 (Type is String)
          • long_name: Northing, Universal Transverse Mercator (UTM) Zone 16, World Geodetic System of 1984 (WGS84) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 4858593.2980000004, 4969661.5542440601 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • LM_X[ /survey/tabular/0/index= 0..1356891] [ /survey/tabular/0/LM_gate_times_centers= 0..27] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: em_data_lmx (Type is String)
          • long_name: EM data, low moment x-component (Type is String)
          • units: picoVolt per Ampere per meter^4 (Type is String)
          • null_value: -9999.9899999999998 (Type is Float64)
          • valid_range: -28506.770809498801, 7759.7782488258699 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • Fid[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: fiducial (Type is String)
          • long_name: Unique fiducial number (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 234882.10000000001, 1869335.3 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • Curr_HM[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: current_high_moment (Type is String)
          • long_name: Transmitter current, high moment (Type is String)
          • units: Ampere (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 104.964942376148, 116.46290012252 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • Curr_LM[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: current_low_moment (Type is String)
          • long_name: Transimtter current, low moment (Type is String)
          • units: Ampere (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 8.7460090719857, 8.8245065333359793 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • Lat[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: latitude (Type is String)
          • long_name: Latitude, World Geodetic System of 1984 (WGS84) (Type is String)
          • units: degree (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 43.87581299, 44.879478770123697 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • N_Nad83[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: northing_nad83 (Type is String)
          • long_name: Northing, Wisconsin Transverse Mercator (WTM), North American Datum of 1983 (NAD83) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 379970.05885306699, 492720.47671428899 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • Time[ /survey/tabular/0/index= 0..1356891] (Type is String)
        • attributes
          • standard_name: time_utc (Type is String)
          • long_name: Universal coordinated time (UTC), hh:mm:ss (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • AngleY[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: angle_y (Type is String)
          • long_name: Instrument tilt angle perpindicular to flight direction (positive when left side of frame is up) (Type is String)
          • units: degrees (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: -17.230813764001201, 13.5832874107296 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • Alt[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: altitude (Type is String)
          • long_name: DGPS instrument altitude (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 215.66028995010399, 415.42511126319999 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • LM_gate_times_bnds[ /survey/tabular/0/LM_gate_times_centers= 0..27] [ /survey/tabular/0/nv= 0..1] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: lm_gate_times_bnds (Type is String)
          • long_name: low moment gate times bounds (Type is String)
          • null_value: not_defined (Type is String)
          • grid_mapping: spatial_ref (Type is String)
          • valid_range: -1.42e-06, 0.0015551650000000001 (Type is Float64)
          • coordinates: spatial_ref (Type is String)
      • _60Hz_Intensity[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: 60hz_intensity (Type is String)
          • long_name: Amplitude spectral density of power line noise at 60 Hz (Type is String)
          • units: not_defined (Type is String)
          • null_value: -9999.9899999999998 (Type is Float64)
          • valid_range: -8.5732709536232593e-06, 2.6714125185576402e-06 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • HM_Z[ /survey/tabular/0/index= 0..1356891] [ /survey/tabular/0/HM_gate_times_centers= 0..31] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: em_data_hmz (Type is String)
          • long_name: EM data, high moment z-component (Type is String)
          • units: picoVolt per Ampere per meter^4 (Type is String)
          • null_value: -9999.9899999999998 (Type is Float64)
          • valid_range: -330.80997322593697, 5833.1291561450398 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • igrf[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: magnetic_igrf_model (Type is String)
          • long_name: Magnetic IGRF value from 2015 model (Type is String)
          • units: nanoTesla (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 54213.500037580598, 54617.769469609397 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • Flight[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: flight_number (Type is String)
          • long_name: Flight name, yyyymmdd.ff (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 20210120.010000002, 20210208.02 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • Base_Mag[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: base_magnetometer (Type is String)
          • long_name: Raw magnetic base station data (Type is String)
          • units: nanoTesla (Type is String)
          • null_value: -9999.9899999999998 (Type is Float64)
          • valid_range: 54178.888155591303, 54542.954270902199 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • Height[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: instrument_height (Type is String)
          • long_name: Instrument height above ground (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 17.737305961011799, 154.398101536924 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • DateTime[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: time (Type is String)
          • long_name: Time, decimal days since January 1, 1900 (Type is String)
          • units: day (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 44216.718542824099, 44235.635825231497 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • GdSpeed[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: ground_speed (Type is String)
          • long_name: Ground speed (Type is String)
          • units: kilometer per hour (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 1.19586401559191, 138.98980168351599 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • AngleX[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: angle_x (Type is String)
          • long_name: Instrument tilt angle in flight direction (positive up) (Type is String)
          • units: degrees (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: -14.204260574878299, 29.244 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • HM_gate_times_bnds[ /survey/tabular/0/HM_gate_times_centers= 0..31] [ /survey/tabular/0/nv= 0..1] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: hm_gate_times_bnds (Type is String)
          • long_name: high moment gate times bounds (Type is String)
          • null_value: not_defined (Type is String)
          • grid_mapping: spatial_ref (Type is String)
          • valid_range: 2.8580000000000001e-05, 0.0039401499999999999 (Type is Float64)
          • coordinates: spatial_ref (Type is String)
      • RMF[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: residual_magnetic_field (Type is String)
          • long_name: Residual magnetic field, IGRF corrected based on 2015 model (Type is String)
          • units: nanoTesla (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: -477.73738455844398, 810.878193090575 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • LM_Z[ /survey/tabular/0/index= 0..1356891] [ /survey/tabular/0/LM_gate_times_centers= 0..27] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: em_data_lmz (Type is String)
          • long_name: EM data, high moment z-component (Type is String)
          • units: picoVolt per Ampere per meter^4 (Type is String)
          • null_value: -9999.9899999999998 (Type is Float64)
          • valid_range: -5198.17423664323, 64982.480479039099 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • Line[ /survey/tabular/0/index= 0..1356891] (Type is Int64)
        • attributes
          • standard_name: line (Type is String)
          • long_name: Line number (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 100101, 115201 (Type is Int64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • Mag_Raw[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: total_magnetic_intensity_raw (Type is String)
          • long_name: Raw total magnetic intensity data (Type is String)
          • units: nanoTesla (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 53747.869408082697, 55382.806600000004 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • spatial_ref(Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • wkid: EPSG:3071 (Type is String)
          • crs_wkt: PROJCRS["NAD83(HARN) / Wisconsin Transverse Mercator",BASEGEOGCRS["NAD83(HARN)",DATUM["NAD83 (High Accuracy Reference Network)",ELLIPSOID["GRS 1980",6378137,298.257222101,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4152]],CONVERSION["Wisconsin Transverse Mercator 83",METHOD["Transverse Mercator",ID["EPSG",9807]],PARAMETER["Latitude of natural origin",0,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude of natural origin",-90,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale factor at natural origin",0.9996,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False easting",520000,LENGTHUNIT["metre",1],ID["EPSG",8806]],PARAMETER["False northing",-4480000,LENGTHUNIT["metre",1],ID["EPSG",8807]]],CS[Cartesian,2],AXIS["easting (X)",east,ORDER[1],LENGTHUNIT["metre",1]],AXIS["northing (Y)",north,ORDER[2],LENGTHUNIT["metre",1]],USAGE[SCOPE["unknown"],AREA["USA - Wisconsin"],BBOX[42.48,-92.89,47.31,-86.25]],ID["EPSG",3071]] (Type is String)
          • proj_string: +proj=tmerc +lat_0=0 +lon_0=-90 +k=0.9996 +x_0=520000 +y_0=-4480000 +ellps=GRS80 +units=m +no_defs +type=crs (Type is String)
          • geographic_crs_name: NAD83(HARN) (Type is String)
          • grid_mapping_name: nad83(harn)_wisconsin_transverse_mercator (Type is String)
          • _CoordinateTransformType: Projection (Type is String)
          • _CoordinateAxisTypes: GeoX GeoY (Type is String)
          • reference_ellipsoid_name: GRS 1980 (Type is String)
          • inverse_flattening: 298.25722210100002 (Type is Float64)
          • semi_major_axis: 6378137. (Type is Float64)
          • semi_minor_axis: 6356752.3141403561 (Type is Float64)
          • prime_meridian_name: Greenwich (Type is String)
          • longitude_of_prime_meridian: 0. (Type is Float64)
          • latitude_of_natural_origin: 0. (Type is Float64)
          • longitude_of_natural_origin: -90. (Type is Float64)
          • scale_factor_at_natural_origin: 0.99960000000000004 (Type is Float64)
          • false_easting: 520000. (Type is Float64)
          • false_northing: -4480000. (Type is Float64)
      • HM_X[ /survey/tabular/0/index= 0..1356891] [ /survey/tabular/0/HM_gate_times_centers= 0..31] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: em_data_hmx (Type is String)
          • long_name: EM data, high moment x-component (Type is String)
          • units: picoVolt per Ampere per meter^4 (Type is String)
          • null_value: -9999.9899999999998 (Type is Float64)
          • valid_range: -1615.9744752101799, 660.53243668875098 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • TMI[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: total_magnetic_intensity (Type is String)
          • long_name: Diurnally corrected filtered total magnetic intensity (Type is String)
          • units: nanoTesla (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 53746.128034145797, 55391.614729428104 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • E_Nad83[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: easting_nad83 (Type is String)
          • long_name: Easting, Wisconsin Transverse Mercator (WTM), North American Datum of 1983 (NAD83) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 655026.62634304701, 732295.56263679604 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • Lon[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: longitude (Type is String)
          • long_name: Longitude, World Geodetic System of 1984 (WGS84) (Type is String)
          • units: degree (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: -88.312229510996701, -87.316215156753501 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • dec[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: decliniation (Type is String)
          • long_name: IGRF declination (Type is String)
          • units: degree (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: -4.8598545423977004, -3.9482705638743298 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • inc[ /survey/tabular/0/index= 0..1356891] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: inclination (Type is String)
          • long_name: IGRF inclination (Type is String)
          • units: degree (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 70.427064467599095, 71.136290946606195 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
    • 1(Type is Group)
      • attributes
        • key_mapping.fiducial: RECORD (Type is String)
        • key_mapping.line_number: LINE_NO (Type is String)
        • key_mapping.x: E_N83WTM (Type is String)
        • key_mapping.y: N_N83WTM (Type is String)
        • key_mapping.z: ELEVATION (Type is String)
        • content: processed data (Type is String)
        • comment: This dataset includes processed AEM data produced by USGS (Type is String)
      Dimensions: [ /survey/tabular/1/index = 0..116768 ] [ /survey/tabular/1/HM_gate_times_centers = 0..21 ] [ /survey/tabular/1/nv = 0..1 ] [ /survey/tabular/1/LM_gate_times_centers = 0..26 ]
      • nv[ /survey/tabular/1/nv= 0..1] (Type is Int64)
        • attributes
          • standard_name: number_of_vertices (Type is String)
          • long_name: Number of vertices for bounding variables (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 0, 1 (Type is Int64)
      • y[ /survey/tabular/1/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: projection_y_coordinate (Type is String)
          • long_name: Northing, Wisconsin Transverse Mercator (WTM), North American Datum of 1983 (NAD83) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 379975.79999999999, 492707.40000000002 (Type is Float64)
          • _CoordinateAxisType: GeoY (Type is String)
      • HM_gate_times_centers[ /survey/tabular/1/HM_gate_times_centers= 0..21] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: hm_gate_times_centers (Type is String)
          • long_name: high moment gate times centers (Type is String)
          • units: seconds (Type is String)
          • null_value: not_defined (Type is String)
          • bounds: HM_gate_times_bnds (Type is String)
          • valid_range: 5.6365e-05, 0.0035443649999999998 (Type is Float64)
      • index[ /survey/tabular/1/index= 0..116768] (Type is Int64)
        • attributes
          • standard_name: index (Type is String)
          • long_name: Index of individual data points (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 0, 116768 (Type is Int64)
      • LM_gate_times_centers[ /survey/tabular/1/LM_gate_times_centers= 0..26] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: lm_gate_times_centers (Type is String)
          • long_name: low moment gate times centers (Type is String)
          • units: seconds (Type is String)
          • null_value: not_defined (Type is String)
          • bounds: LM_gate_times_bnds (Type is String)
          • valid_range: 3.65e-07, 0.0013943650000000001 (Type is Float64)
      • x[ /survey/tabular/1/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: projection_x_coordinate (Type is String)
          • long_name: Easting, Wisconsin Transverse Mercator (WTM), North American Datum of 1983 (NAD83) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 655018.09999999998, 732315.69999999995 (Type is Float64)
          • _CoordinateAxisType: GeoX (Type is String)
      • txrx_dx[ /survey/tabular/1/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: txrx_dx (Type is String)
          • long_name: Nominal inline transmitter-receiver offset (Type is String)
          • units: meter (Type is String)
          • null_value: -9999.9899999999998 (Type is Float64)
          • valid_range: -13.25, -13.25 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • RX_ALTITUDE_STD[ /survey/tabular/1/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: receiver_altitude_error (Type is String)
          • long_name: Standard deviation for receiver altitude (Type is String)
          • units: meter (Type is String)
          • null_value: -9999.9899999999998 (Type is Float64)
          • valid_range: 0.019, 49.521000000000001 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • ALT[ /survey/tabular/1/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: altitude (Type is String)
          • long_name: DGPS instrument altitude (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 16.449999999999999, 154.80000000000001 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • RECORD[ /survey/tabular/1/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: record (Type is String)
          • long_name: Workbench record number (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 1., 13268. (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • txrx_dz[ /survey/tabular/1/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: txrx_dz (Type is String)
          • long_name: Calculated vertical transmitter-receiver offset (Type is String)
          • units: meter (Type is String)
          • null_value: -9999.9899999999998 (Type is Float64)
          • valid_range: -2.7999999999999998, 4.9800000000000004 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • NUMDATA[ /survey/tabular/1/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: number_of_data (Type is String)
          • long_name: Number of active time gates (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 5., 49. (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • LM_gate_times_bnds[ /survey/tabular/1/LM_gate_times_centers= 0..26] [ /survey/tabular/1/nv= 0..1] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: lm_gate_times_bnds (Type is String)
          • long_name: low moment gate times bounds (Type is String)
          • null_value: not_defined (Type is String)
          • grid_mapping: spatial_ref (Type is String)
          • valid_range: -4.2e-07, 0.0015551650000000001 (Type is Float64)
          • coordinates: spatial_ref (Type is String)
      • ELEVATION[ /survey/tabular/1/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: elevation (Type is String)
          • long_name: Digital elevation model, North American Vertical Datum of 1988 (NAVD88) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 176.5, 341.5 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • HM_DataSTD[ /survey/tabular/1/index= 0..116768] [ /survey/tabular/1/HM_gate_times_centers= 0..21] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: em_data_error_hmz (Type is String)
          • long_name: EM data error standard deviation, high moment z-component (Type is String)
          • units: picoVolt per Ampere per meter^4 (Type is String)
          • null_value: -9999.9899999999998 (Type is Float64)
          • valid_range: 1.76e-16, 2.3300000000000002e-10 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • txrx_dy[ /survey/tabular/1/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: txrx_dy (Type is String)
          • long_name: Nominal transverse transmitter-receiver offset (Type is String)
          • units: meter (Type is String)
          • null_value: -9999.9899999999998 (Type is Float64)
          • valid_range: 0., 0. (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • TIMESTAMP[ /survey/tabular/1/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: timestamp (Type is String)
          • long_name: Time, decimal days since January 1, 1900 (Type is String)
          • units: day (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 44214.724664351903, 44235.635810185202 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • sLINE_NO[ /survey/tabular/1/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: master_line (Type is String)
          • long_name: Master line number (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 100100., 920000. (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • LM_DataSTD[ /survey/tabular/1/index= 0..116768] [ /survey/tabular/1/LM_gate_times_centers= 0..26] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: em_data_error_lmz (Type is String)
          • long_name: EM data error standard deviation, low moment z-component (Type is String)
          • units: picoVolt per Ampere per meter^4 (Type is String)
          • null_value: -9999.9899999999998 (Type is Float64)
          • valid_range: 1.3900000000000002e-17, 7.1299999999999997e-08 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • HM_gate_times_bnds[ /survey/tabular/1/HM_gate_times_centers= 0..21] [ /survey/tabular/1/nv= 0..1] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: hm_gate_times_bnds (Type is String)
          • long_name: high moment gate times bounds (Type is String)
          • null_value: not_defined (Type is String)
          • grid_mapping: spatial_ref (Type is String)
          • valid_range: 5.3579999999999999e-05, 0.0039401499999999999 (Type is Float64)
          • coordinates: spatial_ref (Type is String)
      • LINE_NO[ /survey/tabular/1/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: line_number (Type is String)
          • long_name: Line number (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 100101., 920006. (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • pINDEX[ /survey/tabular/1/index= 0..116768] (Type is Int64)
        • attributes
          • standard_name: processing_index (Type is String)
          • long_name: Unique index number for processing (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 0, 122369 (Type is Int64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • spatial_ref(Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • wkid: EPSG:3071 (Type is String)
          • crs_wkt: PROJCRS["NAD83(HARN) / Wisconsin Transverse Mercator",BASEGEOGCRS["NAD83(HARN)",DATUM["NAD83 (High Accuracy Reference Network)",ELLIPSOID["GRS 1980",6378137,298.257222101,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4152]],CONVERSION["Wisconsin Transverse Mercator 83",METHOD["Transverse Mercator",ID["EPSG",9807]],PARAMETER["Latitude of natural origin",0,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude of natural origin",-90,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale factor at natural origin",0.9996,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False easting",520000,LENGTHUNIT["metre",1],ID["EPSG",8806]],PARAMETER["False northing",-4480000,LENGTHUNIT["metre",1],ID["EPSG",8807]]],CS[Cartesian,2],AXIS["easting (X)",east,ORDER[1],LENGTHUNIT["metre",1]],AXIS["northing (Y)",north,ORDER[2],LENGTHUNIT["metre",1]],USAGE[SCOPE["unknown"],AREA["USA - Wisconsin"],BBOX[42.48,-92.89,47.31,-86.25]],ID["EPSG",3071]] (Type is String)
          • proj_string: +proj=tmerc +lat_0=0 +lon_0=-90 +k=0.9996 +x_0=520000 +y_0=-4480000 +ellps=GRS80 +units=m +no_defs +type=crs (Type is String)
          • geographic_crs_name: NAD83(HARN) (Type is String)
          • grid_mapping_name: nad83(harn)_wisconsin_transverse_mercator (Type is String)
          • _CoordinateTransformType: Projection (Type is String)
          • _CoordinateAxisTypes: GeoX GeoY (Type is String)
          • reference_ellipsoid_name: GRS 1980 (Type is String)
          • inverse_flattening: 298.25722210100002 (Type is Float64)
          • semi_major_axis: 6378137. (Type is Float64)
          • semi_minor_axis: 6356752.3141403561 (Type is Float64)
          • prime_meridian_name: Greenwich (Type is String)
          • longitude_of_prime_meridian: 0. (Type is Float64)
          • latitude_of_natural_origin: 0. (Type is Float64)
          • longitude_of_natural_origin: -90. (Type is Float64)
          • scale_factor_at_natural_origin: 0.99960000000000004 (Type is Float64)
          • false_easting: 520000. (Type is Float64)
          • false_northing: -4480000. (Type is Float64)
      • TX_ALTITUDE_STD[ /survey/tabular/1/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: transmitter_altitude_error (Type is String)
          • long_name: Standard deviation for transmitter altitude (Type is String)
          • units: meter (Type is String)
          • null_value: -9999.9899999999998 (Type is Float64)
          • valid_range: 0.019, 49.521000000000001 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • N_N83WTM[ /survey/tabular/1/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: northing_nad83 (Type is String)
          • long_name: Northing, Wisconsin Transverse Mercator (WTM), North American Datum of 1983 (NAD83) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 379975.79999999999, 492707.40000000002 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • RX_ALTITUDE[ /survey/tabular/1/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: receiver_altitude (Type is String)
          • long_name: Processed receiver altitude (Type is String)
          • units: meter (Type is String)
          • null_value: -9999.9899999999998 (Type is Float64)
          • valid_range: 17.010000000000002, 155.91 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • HM_Data[ /survey/tabular/1/index= 0..116768] [ /survey/tabular/1/HM_gate_times_centers= 0..21] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: em_data_hmz (Type is String)
          • long_name: EM data, high moment z-component (Type is String)
          • units: picoVolt per Ampere per meter^4 (Type is String)
          • null_value: -9999.9899999999998 (Type is Float64)
          • valid_range: -1.8043999999999999e-11, 5.8245999999999999e-09 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • LM_Data[ /survey/tabular/1/index= 0..116768] [ /survey/tabular/1/LM_gate_times_centers= 0..26] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: em_data_lmz (Type is String)
          • long_name: EM data, low moment z-component (Type is String)
          • units: picoVolt per Ampere per meter^4 (Type is String)
          • null_value: -9999.9899999999998 (Type is Float64)
          • valid_range: -3.6579e-07, 1.8915e-07 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • E_N83WTM[ /survey/tabular/1/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: easting_nad83 (Type is String)
          • long_name: Easting, Wisconsin Transverse Mercator (WTM), North American Datum of 1983 (NAD83) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 655018.09999999998, 732315.69999999995 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • TX_ALTITUDE[ /survey/tabular/1/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: transmitter_altitude (Type is String)
          • long_name: Processed transmitter altitude (Type is String)
          • units: meter (Type is String)
          • null_value: -9999.9899999999998 (Type is Float64)
          • valid_range: 16.454999999999998, 154.77000000000001 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
    • 2(Type is Group)
      • attributes
        • key_mapping.fiducial: RECORD (Type is String)
        • key_mapping.line_number: LINE_NO (Type is String)
        • key_mapping.x: E_N83WTM (Type is String)
        • key_mapping.y: N_N83WTM (Type is String)
        • key_mapping.z: ELEVATION (Type is String)
        • content: inverted resistivity models (Type is String)
        • comment: This dataset includes inverted resistivity models derived from processed AEM data produced by USGS (Type is String)
        • inversion.model_file: WI_SkyTEM_2021_InvertedModels.csv (Type is String)
        • inversion.inversion_software: Aarhus Workbench (Type is String)
        • inversion.software_version: v 6.0.1.0 (Type is String)
        • inversion.date: 03/2021 - 06/2021 (Type is String)
        • inversion.comment: Processed data were inverted in Aarhus Workbench software (v 6.0.1.0) using laterally constrained inversion to recover 40-layer fixed depth blocky resistivity models by USGS 03/2021 - 06/2021; Inverted resistivity models were exported to netCDF 11/2021. (Type is String)
        • inversion.data_file: WI_SkyTEM_2021_ProcessedData.csv (Type is String)
      Dimensions: [ /survey/tabular/2/index = 0..116768 ] [ /survey/tabular/2/layer_depth_centers = 0..39 ] [ /survey/tabular/2/nv = 0..1 ]
      • nv[ /survey/tabular/2/nv= 0..1] (Type is Int64)
        • attributes
          • standard_name: number_of_vertices (Type is String)
          • long_name: Number of vertices for bounding variables (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 0, 1 (Type is Int64)
      • y[ /survey/tabular/2/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: projection_y_coordinate (Type is String)
          • long_name: Northing, Wisconsin Transverse Mercator (WTM), North American Datum of 1983 (NAD83) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 379975.79999999999, 492707.40000000002 (Type is Float64)
          • _CoordinateAxisType: GeoY (Type is String)
      • index[ /survey/tabular/2/index= 0..116768] (Type is Int64)
        • attributes
          • standard_name: index (Type is String)
          • long_name: Index of individual data points (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 0, 116768 (Type is Int64)
      • layer_depth_centers[ /survey/tabular/2/layer_depth_centers= 0..39] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: layer_depth_centers (Type is String)
          • long_name: Depth to model layer centers (Type is String)
          • units: meters (Type is String)
          • null_value: not_defined (Type is String)
          • bounds: layer_depth_bnds (Type is String)
          • valid_range: 0.375, 343.75 (Type is Float64)
      • x[ /survey/tabular/2/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: projection_x_coordinate (Type is String)
          • long_name: Easting, Wisconsin Transverse Mercator (WTM), North American Datum of 1983 (NAD83) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 655018.09999999998, 732315.69999999995 (Type is Float64)
          • _CoordinateAxisType: GeoX (Type is String)
      • RHO_I_STD[ /survey/tabular/2/index= 0..116768] [ /survey/tabular/2/layer_depth_centers= 0..39] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: layer_resistivity_uncertainty (Type is String)
          • long_name: Uncertainty in inverted layer resistivity (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 0.02, 98. (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • DOI_CONSERVATIVE[ /survey/tabular/2/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: depth_of_investigation_conservative (Type is String)
          • long_name: Conservative estimate of depth of investigation (DOI) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 0.75, 275.03300000000002 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • ALT[ /survey/tabular/2/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: altitude (Type is String)
          • long_name: DGPS instrument altitude (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 16.449999999999999, 154.80000000000001 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • RECORD[ /survey/tabular/2/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: record (Type is String)
          • long_name: Workbench record number (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 1., 13268. (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • E_N83WTM[ /survey/tabular/2/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: easting_nad83 (Type is String)
          • long_name: Easting, Wisconsin Transverse Mercator (WTM), North American Datum of 1983 (NAD83) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 655018.09999999998, 732315.69999999995 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • NUMDATA[ /survey/tabular/2/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: number_of_data (Type is String)
          • long_name: Number of active time gates (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 5., 49. (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • ELEVATION[ /survey/tabular/2/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: elevation (Type is String)
          • long_name: Digital elevation model, North American Vertical Datum of 1988 (NAVD88) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 176.5, 341.5 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • INVALTSTD[ /survey/tabular/2/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: inverted_altitude_uncertainty (Type is String)
          • long_name: Standard deviation of inverted instrument altitude (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 0.0033999999999999998, 0.083599999999999994 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • TIMESTAMP[ /survey/tabular/2/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: timestamp (Type is String)
          • long_name: Time, decimal days since January 1, 1900 (Type is String)
          • units: day (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 44214.724664351903, 44235.635810185202 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • sLINE_NO[ /survey/tabular/2/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: master_line (Type is String)
          • long_name: Master line number (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 100100., 920000. (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • INVALT[ /survey/tabular/2/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: inverted_altitude (Type is String)
          • long_name: Inverted instrument altitude (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 14.109999999999999, 340.19999999999999 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • RESDATA[ /survey/tabular/2/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: data_residual (Type is String)
          • long_name: Error-weighted inversion data misfit (target = 1.0) (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 0.1794, 39.07 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • LINE_NO[ /survey/tabular/2/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: line_number (Type is String)
          • long_name: Line number (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 100101., 920006. (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • pINDEX[ /survey/tabular/2/index= 0..116768] (Type is Int64)
        • attributes
          • standard_name: processing_index (Type is String)
          • long_name: Unique index number for processing (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 0, 122369 (Type is Int64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • spatial_ref(Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • wkid: EPSG:3071 (Type is String)
          • crs_wkt: PROJCRS["NAD83(HARN) / Wisconsin Transverse Mercator",BASEGEOGCRS["NAD83(HARN)",DATUM["NAD83 (High Accuracy Reference Network)",ELLIPSOID["GRS 1980",6378137,298.257222101,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4152]],CONVERSION["Wisconsin Transverse Mercator 83",METHOD["Transverse Mercator",ID["EPSG",9807]],PARAMETER["Latitude of natural origin",0,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude of natural origin",-90,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale factor at natural origin",0.9996,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False easting",520000,LENGTHUNIT["metre",1],ID["EPSG",8806]],PARAMETER["False northing",-4480000,LENGTHUNIT["metre",1],ID["EPSG",8807]]],CS[Cartesian,2],AXIS["easting (X)",east,ORDER[1],LENGTHUNIT["metre",1]],AXIS["northing (Y)",north,ORDER[2],LENGTHUNIT["metre",1]],USAGE[SCOPE["unknown"],AREA["USA - Wisconsin"],BBOX[42.48,-92.89,47.31,-86.25]],ID["EPSG",3071]] (Type is String)
          • proj_string: +proj=tmerc +lat_0=0 +lon_0=-90 +k=0.9996 +x_0=520000 +y_0=-4480000 +ellps=GRS80 +units=m +no_defs +type=crs (Type is String)
          • geographic_crs_name: NAD83(HARN) (Type is String)
          • grid_mapping_name: nad83(harn)_wisconsin_transverse_mercator (Type is String)
          • _CoordinateTransformType: Projection (Type is String)
          • _CoordinateAxisTypes: GeoX GeoY (Type is String)
          • reference_ellipsoid_name: GRS 1980 (Type is String)
          • inverse_flattening: 298.25722210100002 (Type is Float64)
          • semi_major_axis: 6378137. (Type is Float64)
          • semi_minor_axis: 6356752.3141403561 (Type is Float64)
          • prime_meridian_name: Greenwich (Type is String)
          • longitude_of_prime_meridian: 0. (Type is Float64)
          • latitude_of_natural_origin: 0. (Type is Float64)
          • longitude_of_natural_origin: -90. (Type is Float64)
          • scale_factor_at_natural_origin: 0.99960000000000004 (Type is Float64)
          • false_easting: 520000. (Type is Float64)
          • false_northing: -4480000. (Type is Float64)
      • DEP_TOP[ /survey/tabular/2/index= 0..116768] [ /survey/tabular/2/layer_depth_centers= 0..39] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: depth_top (Type is String)
          • long_name: Top of model layers (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 0., 275. (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • RESTOTAL[ /survey/tabular/2/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: total_residual (Type is String)
          • long_name: Total inversion residual (data and model regularization) (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 0.80900000000000005, 1.208 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • N_N83WTM[ /survey/tabular/2/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: northing_nad83 (Type is String)
          • long_name: Northing, Wisconsin Transverse Mercator (WTM), North American Datum of 1983 (NAD83) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 379975.79999999999, 492707.40000000002 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • layer_depth_bnds[ /survey/tabular/2/layer_depth_centers= 0..39] [ /survey/tabular/2/nv= 0..1] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: layer_depth_bnds (Type is String)
          • long_name: Depth to model layer bounds (Type is String)
          • null_value: not_defined (Type is String)
          • grid_mapping: spatial_ref (Type is String)
          • valid_range: 0., 412.5 (Type is Float64)
          • coordinates: spatial_ref (Type is String)
      • DOI_STANDARD[ /survey/tabular/2/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: depth_of_investigation_standard (Type is String)
          • long_name: Standard estimate of depth of investigation (DOI) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 2.8220000000000001, 275.03300000000002 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • DEP_BOT[ /survey/tabular/2/index= 0..116768] [ /survey/tabular/2/layer_depth_centers= 0..39] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: depth_bottom (Type is String)
          • long_name: Bottom of model layers (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 0.75, 412.5 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • RHO_I[ /survey/tabular/2/index= 0..116768] [ /survey/tabular/2/layer_depth_centers= 0..39] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: layer_resistivity (Type is String)
          • long_name: Inverted layer resistivity (Type is String)
          • units: Ohm*meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 0.10000000000000001, 20000. (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • DELTAALT[ /survey/tabular/2/index= 0..116768] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: inverted_altitude_difference (Type is String)
          • long_name: Measured minus inverted altitude (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: -25.16, 192.59999999999999 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
    • 3(Type is Group)
      • attributes
        • key_mapping.x: E_N83WTM (Type is String)
        • key_mapping.y: N_N83WTM (Type is String)
        • content: bedrock elevation points (Type is String)
        • comment: This dataset includes AEM-derived point estimates of the elevation of the top of bedrock produced by USGS (Type is String)
      Dimensions: [ /survey/tabular/3/index = 0..82863 ]
      • y[ /survey/tabular/3/index= 0..82863] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: projection_y_coordinate (Type is String)
          • long_name: Northing, Wisconsin Transverse Mercator (WTM), North American Datum of 1983 (NAD83) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 379975.79999999999, 492716.09000000003 (Type is Float64)
          • _CoordinateAxisType: GeoY (Type is String)
      • index[ /survey/tabular/3/index= 0..82863] (Type is Int64)
        • attributes
          • standard_name: index (Type is String)
          • long_name: Index of individual data points (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 0, 82863 (Type is Int64)
      • x[ /survey/tabular/3/index= 0..82863] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: projection_x_coordinate (Type is String)
          • long_name: Easting, Wisconsin Transverse Mercator (WTM), North American Datum of 1983 (NAD83) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 655129.58999999997, 732315.68999999994 (Type is Float64)
          • _CoordinateAxisType: GeoX (Type is String)
      • E_N83WTM[ /survey/tabular/3/index= 0..82863] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: easting (Type is String)
          • long_name: Easting, Wisconsin Transverse Mercator (WTM), North American Datum of 1983 (NAD83) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 655129.58999999997, 732315.68999999994 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • ID[ /survey/tabular/3/index= 0..82863] (Type is Int64)
        • attributes
          • standard_name: identifier (Type is String)
          • long_name: Unique identifier (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 1, 102687 (Type is Int64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • OriginType[ /survey/tabular/3/index= 0..82863] (Type is Int64)
        • attributes
          • standard_name: point_origin (Type is String)
          • long_name: Point origin type; 3 = automated pick from resistivity value; 0 = manual pick (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 0, 3 (Type is Int64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • EditDate[ /survey/tabular/3/index= 0..82863] (Type is String)
        • attributes
          • standard_name: edit_date (Type is String)
          • long_name: Date of interpretation point (Type is String)
          • units: not_defined (Type is String)
          • format: M/D/YYYY H:MM (Type is String)
          • null_value: not_defined (Type is String)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • ZSTD[ /survey/tabular/3/index= 0..82863] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: elevation_uncertainty (Type is String)
          • long_name: Standard devation of top bedrock elevation (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 1., 10. (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • spatial_ref(Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • wkid: EPSG:3071 (Type is String)
          • crs_wkt: PROJCRS["NAD83(HARN) / Wisconsin Transverse Mercator",BASEGEOGCRS["NAD83(HARN)",DATUM["NAD83 (High Accuracy Reference Network)",ELLIPSOID["GRS 1980",6378137,298.257222101,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4152]],CONVERSION["Wisconsin Transverse Mercator 83",METHOD["Transverse Mercator",ID["EPSG",9807]],PARAMETER["Latitude of natural origin",0,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude of natural origin",-90,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale factor at natural origin",0.9996,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False easting",520000,LENGTHUNIT["metre",1],ID["EPSG",8806]],PARAMETER["False northing",-4480000,LENGTHUNIT["metre",1],ID["EPSG",8807]]],CS[Cartesian,2],AXIS["easting (X)",east,ORDER[1],LENGTHUNIT["metre",1]],AXIS["northing (Y)",north,ORDER[2],LENGTHUNIT["metre",1]],USAGE[SCOPE["unknown"],AREA["USA - Wisconsin"],BBOX[42.48,-92.89,47.31,-86.25]],ID["EPSG",3071]] (Type is String)
          • proj_string: +proj=tmerc +lat_0=0 +lon_0=-90 +k=0.9996 +x_0=520000 +y_0=-4480000 +ellps=GRS80 +units=m +no_defs +type=crs (Type is String)
          • geographic_crs_name: NAD83(HARN) (Type is String)
          • grid_mapping_name: nad83(harn)_wisconsin_transverse_mercator (Type is String)
          • _CoordinateTransformType: Projection (Type is String)
          • _CoordinateAxisTypes: GeoX GeoY (Type is String)
          • reference_ellipsoid_name: GRS 1980 (Type is String)
          • inverse_flattening: 298.25722210100002 (Type is Float64)
          • semi_major_axis: 6378137. (Type is Float64)
          • semi_minor_axis: 6356752.3141403561 (Type is Float64)
          • prime_meridian_name: Greenwich (Type is String)
          • longitude_of_prime_meridian: 0. (Type is Float64)
          • latitude_of_natural_origin: 0. (Type is Float64)
          • longitude_of_natural_origin: -90. (Type is Float64)
          • scale_factor_at_natural_origin: 0.99960000000000004 (Type is Float64)
          • false_easting: 520000. (Type is Float64)
          • false_northing: -4480000. (Type is Float64)
      • N_N83WTM[ /survey/tabular/3/index= 0..82863] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: northing (Type is String)
          • long_name: Northing, Wisconsin Transverse Mercator (WTM), North American Datum of 1983 (NAD83) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 379975.79999999999, 492716.09000000003 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
      • BR_ELEVATION[ /survey/tabular/3/index= 0..82863] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: top_bedrock_elevation (Type is String)
          • long_name: Elevation, top of dolomite bedrock, North American Vertical Datum of 1988 (NAVD88) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 136.66, 341.88 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
          • coordinates: spatial_ref x y (Type is String)
  • raster(Type is Group)
    no attributes
    • 0(Type is Group)
      • attributes
        • content: gridded magnetic and bedrock maps (Type is String)
        • comment: This dataset includes AEM-derived estimates of the elevation of the top of bedrock produced by USGS (Type is String)
        • key_mapping.x: E_Nad83 (Type is String)
        • key_mapping.y: N_Nad83 (Type is String)
      Dimensions: [ /survey/raster/0/y = 0..1154 ] [ /survey/raster/0/nv = 0..1 ] [ /survey/raster/0/x = 0..798 ]
      • y[ /survey/raster/0/y= 0..1154] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: projection_y_coordinate (Type is String)
          • long_name: Northing, Wisconsin Transverse Mercator (WTM), North American Datum of 1983 (NAD83) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • _CoordinateAxisType: _GeoY (Type is String)
          • axis: y (Type is String)
          • bounds: y_bnds (Type is String)
          • valid_range: 379902.39473377308, 495302.39473377308 (Type is Float64)
      • x[ /survey/raster/0/x= 0..798] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: projection_x_coordinate (Type is String)
          • long_name: Easting, Wisconsin Transverse Mercator (WTM), North American Datum of 1983 (NAD83) (Type is String)
          • units: meter (Type is String)
          • null_value: not_defined (Type is String)
          • _CoordinateAxisType: _GeoX (Type is String)
          • axis: x (Type is String)
          • bounds: x_bnds (Type is String)
          • valid_range: 655072.04824455827, 734872.04824455827 (Type is Float64)
      • nv[ /survey/raster/0/nv= 0..1] (Type is Int64)
        • attributes
          • standard_name: number_of_vertices (Type is String)
          • long_name: Number of vertices for bounding variables (Type is String)
          • units: not_defined (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 0, 1 (Type is Int64)
      • magnetic_tmi[ /survey/raster/0/y= 0..1154] [ /survey/raster/0/x= 0..798] (Type is Float64)
        • attributes
          • _FillValue: -9999.9899999999998 (Type is Float64)
          • standard_name: total_magnetic_intensity (Type is String)
          • long_name: Total magnetic intensity, diurnally corrected and filtered (Type is String)
          • units: nanoTesla (Type is String)
          • null_value: -9999.9899999999998 (Type is Float64)
          • valid_range: 53745.6015625, 55396.48828125 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
      • bedrock_depth[ /survey/raster/0/y= 0..1154] [ /survey/raster/0/x= 0..798] (Type is Float32)
        • attributes
          • _FillValue: -9999.990234 (Type is Float32)
          • standard_name: bedrock_depth (Type is String)
          • long_name: Depth to bedrock (Type is String)
          • units: foot (Type is String)
          • null_value: -9999.9899999999998 (Type is Float64)
          • valid_range: 0.00043053017, 270.5463257 (Type is Float32)
          • grid_mapping: spatial_ref (Type is String)
      • magnetic_rmf[ /survey/raster/0/y= 0..1154] [ /survey/raster/0/x= 0..798] (Type is Float64)
        • attributes
          • _FillValue: -9999.9899999999998 (Type is Float64)
          • standard_name: residual_magnetic_field (Type is String)
          • long_name: Residual magnetic field, IGRF corrected from 2015 model (Type is String)
          • units: nanoTesla (Type is String)
          • null_value: -9999.9899999999998 (Type is Float64)
          • valid_range: -478.36932373046875, 815.2686767578125 (Type is Float64)
          • grid_mapping: spatial_ref (Type is String)
      • spatial_ref(Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • wkid: EPSG:3071 (Type is String)
          • crs_wkt: PROJCRS["NAD83(HARN) / Wisconsin Transverse Mercator",BASEGEOGCRS["NAD83(HARN)",DATUM["NAD83 (High Accuracy Reference Network)",ELLIPSOID["GRS 1980",6378137,298.257222101,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4152]],CONVERSION["Wisconsin Transverse Mercator 83",METHOD["Transverse Mercator",ID["EPSG",9807]],PARAMETER["Latitude of natural origin",0,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude of natural origin",-90,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale factor at natural origin",0.9996,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False easting",520000,LENGTHUNIT["metre",1],ID["EPSG",8806]],PARAMETER["False northing",-4480000,LENGTHUNIT["metre",1],ID["EPSG",8807]]],CS[Cartesian,2],AXIS["easting (X)",east,ORDER[1],LENGTHUNIT["metre",1]],AXIS["northing (Y)",north,ORDER[2],LENGTHUNIT["metre",1]],USAGE[SCOPE["unknown"],AREA["USA - Wisconsin"],BBOX[42.48,-92.89,47.31,-86.25]],ID["EPSG",3071]] (Type is String)
          • proj_string: +proj=tmerc +lat_0=0 +lon_0=-90 +k=0.9996 +x_0=520000 +y_0=-4480000 +ellps=GRS80 +units=m +no_defs +type=crs (Type is String)
          • geographic_crs_name: NAD83(HARN) (Type is String)
          • grid_mapping_name: nad83(harn)_wisconsin_transverse_mercator (Type is String)
          • _CoordinateTransformType: Projection (Type is String)
          • _CoordinateAxisTypes: GeoX GeoY (Type is String)
          • reference_ellipsoid_name: GRS 1980 (Type is String)
          • inverse_flattening: 298.25722210100002 (Type is Float64)
          • semi_major_axis: 6378137. (Type is Float64)
          • semi_minor_axis: 6356752.3141403561 (Type is Float64)
          • prime_meridian_name: Greenwich (Type is String)
          • longitude_of_prime_meridian: 0. (Type is Float64)
          • latitude_of_natural_origin: 0. (Type is Float64)
          • longitude_of_natural_origin: -90. (Type is Float64)
          • scale_factor_at_natural_origin: 0.99960000000000004 (Type is Float64)
          • false_easting: 520000. (Type is Float64)
          • false_northing: -4480000. (Type is Float64)
      • x_bnds[ /survey/raster/0/x= 0..798] [ /survey/raster/0/nv= 0..1] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: projection_x_coordinate_bounds (Type is String)
          • long_name: Easting, Wisconsin Transverse Mercator (WTM), North American Datum of 1983 (NAD83) cell boundaries (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 655022.04824455827, 734922.04824455827 (Type is Float64)
      • y_bnds[ /survey/raster/0/y= 0..1154] [ /survey/raster/0/nv= 0..1] (Type is Float64)
        • attributes
          • _FillValue: NaN (Type is Float64)
          • standard_name: projection_y_coordinate_bounds (Type is String)
          • long_name: Northing, Wisconsin Transverse Mercator (WTM), North American Datum of 1983 (NAD83) cell boundaries (Type is String)
          • null_value: not_defined (Type is String)
          • valid_range: 379852.39473377308, 495352.39473377308 (Type is Float64)
      • bedrock_top_elevation[ /survey/raster/0/y= 0..1154] [ /survey/raster/0/x= 0..798] (Type is Float32)
        • attributes
          • _FillValue: -9999.990234 (Type is Float32)
          • standard_name: bedrock_top_elevation (Type is String)
          • long_name: Elevation, top of dolomite bedrock, North American Vertical Datum of 1988 (NAVD88) (Type is String)
          • units: foot (Type is String)
          • null_value: -9999.9899999999998 (Type is Float64)
          • valid_range: 465.1843262, 1119.976685 (Type is Float32)
          • grid_mapping: spatial_ref (Type is String)
debug
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OPeNDAP Hyrax (1.16.8-383)
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