Dataset {
    Float32 L[L = 2];
    Float32 Y[Y = 12];
    Grid {
     ARRAY:
        Float64 PredErrorVars[L = 2][Y = 12];
     MAPS:
        Float32 L[L = 2];
        Float32 Y[Y = 12];
    } PredErrorVars;
} PredErrorVars;