Dataset {
    Float32 core[core = 1];
    Grid {
     ARRAY:
        Float32 lat[core = 1];
     MAPS:
        Float32 core[core = 1];
    } lat;
    Grid {
     ARRAY:
        Float32 lon[core = 1];
     MAPS:
        Float32 core[core = 1];
    } lon;
    Structure {
        Grid {
         ARRAY:
            Byte lith[core = 1];
         MAPS:
            Float32 core[core = 1];
        } lith;
    } surface;
} MGS;