Dataset {
    Float32 south_north[south_north = 109];
    Float32 west_east[west_east = 182];
    Grid {
     ARRAY:
        Float32 HGT[south_north = 109][west_east = 182];
     MAPS:
        Float32 south_north[south_north = 109];
        Float32 west_east[west_east = 182];
    } HGT;
} surface;