| X: | Array of 64 bit Reals [nodes = 0..3473] grid: element grid_location: node |
| Y: | Array of 64 bit Reals [nodes = 0..3473] grid: element grid_location: node |
| nodedata: | Array of 64 bit Reals [nodes = 0..3473] grid: element grid_location: node |
| element: | Array of 32 bit Integers [three = 0..2][tris = 0..6341] cell_type: tri_ccw index_origin: 1 coordinates_node: X Y |