Well I got 98 page impressions page impressions 98 clicks 10 CTR is somewhere 8-11% Total Earning: $12.27 Yesterday I got something like this as-well. Should I be worried? CTR is really high and getting more than a 1 dollar for each click. BTW information is from one blog only.
Could be someone site-targeting you. That's a good sign. Do you have that option enabled? If their CPM is high enough, their ad will be the only one displayed in your block.