According to this poll of Adsense users regarding CTR, you are in the upper 14% with your CTR numbers.
Well I get 2-3% CTR over all my websites, some do 2%, some do 17%. You cant unilaterally say what is a good %, 1% for some might be great and 20% for others can earn next to nothing..
wow cool, thanks guys yesterday I made my first amount of money over $20.00 ($25.00) in one day and i'm real excited about adsense (1,371 impressions 209 clicks %15.24). The link ads under the 'thumbnail' images really work! filmstack.com is the site. It's just a blog
CTR 5% should be considered a good one but there are some sites averaging around 30% still making moolah