Is the 2D radiation pattern found in official datasheet for e400
Second and third graph are the same although they shouldn't be.
Also I find it very strange that orientation left/right (East/West) has about 8dBm difference which makes omni antenna not so perfectly omni 360.
I believe ceiling mount should be optimal for our office coverage as it always was with omni antennas but I am a little bit worried about this good NE to poor SW gain difference.
Is it possible to get more detailed and easily understood pattern like this?