Divide by 2. Average of 1-3 Or 2.5, 1+2+3+4=10/4=2.5 xD I'm guessing there's ~80 people playing on the box at peak give or take +/-10 or so.
On patch day or if the server crashes the number is misleading. We have to figure a better way to realtime it. But other things have been a tad more important.