What is the correct nethashrate for Duck?

Because on http://duck.extremepool.org/ and https://minergate.com/pool-stats/duck pool it sais 350 KH/s,  and on http://new.hashharder.com/cryptonote/ducknote and http://duck.ext-pool.net/ pool it sais 1400 KH/s.

So which one is right? I would like to know, so I could calculate my mining profitability.