You should not disclose your CTR, eCPM & number of clicks to anyone as it is not allowed according to their terms. However, it depends on nature of website. If you have a forum, 1% CTR is very good but if you have a unique website with lots of content, 1% is very low.
Depends on the niche and traffic. If you get a lot of traffic (10s of 1000s a day) a 2% CTR is pretty damn good. If you get 10 uniques a day, a 20% CTR is average. Etc.