Dataset {
    Float32 T[T = 12];
    Float32 Y[Y = 685];
    Float32 X[X = 621];
    Grid {
     ARRAY:
        Float32 tmean[T = 12][Y = 685][X = 621];
     MAPS:
        Float32 T[T = 12];
        Float32 Y[Y = 685];
        Float32 X[X = 621];
    } tmean;
} tmean;