Dataset {
    Float32 P[P = 16];
    Float32 T[T = 12];
    Float32 Y[Y = 73];
    Grid {
     ARRAY:
        Float32 psi[T = 12][P = 16][Y = 73];
     MAPS:
        Float32 T[T = 12];
        Float32 P[P = 16];
        Float32 Y[Y = 73];
    } psi;
} psi;