Dataset {
    Int32 P[P = 17];
    Float32 Y[Y = 73];
    Float32 X[X = 144];
    Grid {
     ARRAY:
        Float64 v[P = 17][Y = 73][X = 144];
     MAPS:
        Int32 P[P = 17];
        Float32 Y[Y = 73];
        Float32 X[X = 144];
    } v;
} v;