Dataset {
    Float32 lon[lon = 18];
    Float32 time[time = 1021];
    Grid {
     ARRAY:
        Float32 int_dtime[lon = 18][time = 1021];
     MAPS:
        Float32 lon[lon = 18];
        Float32 time[time = 1021];
    } int_dtime;
} int_dtime;