seems nothing wrong ... Go ahead with that ..use any IP tracking code or google analytics , www.statcounter.com Ok
I think it depends on the keywords for site. If they make more than 35 cents per click then they are having a bad day.
Thats an impressive amount. Good Luck Adsense and your earnings have nothing to do with this < I assume you are referring to Grunt displayed under your username >. Peace !!
Stuff your site with good content. In a few months you'll be earning that horrible $155.00 per day income.