Dataset {
    Float32 zlev[zlev = 1];
    Float32 X[X = 180];
    Grid {
     ARRAY:
        Float32 partial_X[zlev = 1][X = 180];
     MAPS:
        Float32 zlev[zlev = 1];
        Float32 X[X = 180];
    } partial_X;
} partial_X;