Dataset {
    Float32 lon[lon = 20];
    Float32 time[time = 1019];
    Grid {
     ARRAY:
        Float32 partial_lon[lon = 20][time = 1019];
     MAPS:
        Float32 lon[lon = 20];
        Float32 time[time = 1019];
    } partial_lon;
} partial_lon;