How do you figure your $/hour rate?

Is it strange that most of my finishes are in fifth place (about 21%)? 43% ROI and 45% ITM at the $11 level. It's a tiny sample size but I want to stop leaks early. It seems like I can get to 5 handed easily but with a stack of T500-1200 and getting blinded off fast, I find that I push at the wrong time a lot.