Dataset {
    Float32 X[X = 151];
    Float32 Y[Y = 121];
    Grid {
     ARRAY:
        Float64 PredErrVar_prcp[Y = 121][X = 151];
     MAPS:
        Float32 Y[Y = 121];
        Float32 X[X = 151];
    } PredErrVar_prcp;
} Forecast;