The top one is the amount of games you've played at the various stakes along the x axis. I don't understand the middle one, but the bottom one shows your total profit vs games played i.e at around 110-115 games played you won around $900 and at 205-250 games you had a sick downswing around -$600
I think the middle ones mean you have a much better ROI at $2 tournies than $10 tournies