Dataset {
    Float32 X[X = 144];
    Float32 T[T = 135];
    Float32 Y[Y = 72];
    Grid {
     ARRAY:
        Float32 err[T = 135][Y = 72][X = 144];
     MAPS:
        Float32 T[T = 135];
        Float32 Y[Y = 72];
        Float32 X[X = 144];
    } err;
} SSMI_combined;