Dataset {
    Float32 lon[lon = 19];
    Float32 time[time = 1020];
    Float32 lat[lat = 23];
    Grid {
     ARRAY:
        Float32 prec[lat = 23][lon = 19][time = 1020];
     MAPS:
        Float32 lat[lat = 23];
        Float32 lon[lon = 19];
        Float32 time[time = 1020];
    } prec;
} prec;