Dataset {
    Float32 S[S = 29];
    Float32 X[X = 500];
    Float32 L[L = 1];
    Float32 Y[Y = 450];
    Grid {
     ARRAY:
        Float32 PredErrorVars[L = 1][S = 29][Y = 450][X = 500];
     MAPS:
        Float32 L[L = 1];
        Float32 S[S = 29];
        Float32 Y[Y = 450];
        Float32 X[X = 500];
    } PredErrorVars;
} Forecast;