Dataset {
    Int32 P[P = 17];
    Float32 X[X = 144];
    Float32 T[T = 416];
    Grid {
     ARRAY:
        Float64 phi[T = 416][P = 17][X = 144];
     MAPS:
        Float32 T[T = 416];
        Int32 P[P = 17];
        Float32 X[X = 144];
    } phi;
} phi;