Would have made around 0.05BTC on Slushpool. But of course it could have gone the other way, Feb was/is a severely unlucky month.
Here is my all time reward with single S9 13.5T for 39days of mining on kano.is poolI started on 6th of January 2018Earned apprx $334 in 39Days based on current preev rate
https://i.imgur.com/u4SskAW.jpg You also have to remember the sheer number of miners now being set up, sold etc will just dilute profit payments even more over the coming weeks/months, also remember that BTC price has taken a hit this year so when converting to USD it looks worse.