Dataset {
    Float32 P[P = 18];
    Float32 Y[Y = 73];
    Float32 X[X = 144];
    Grid {
     ARRAY:
        Float64 int_dP[P = 18][Y = 73][X = 144];
     MAPS:
        Float32 P[P = 18];
        Float32 Y[Y = 73];
        Float32 X[X = 144];
    } int_dP;
} int_dP;