Recently I named each of my adsense blocks (with different names/channels) example. I have 3 x 350x250 large rectangle. in my website earning different impressions. first got 100 , the second one is only 30, the last one 15. This day. Their impressions varied because their position is in different places of my website. Today, I checked my adsense account and I got a 4.5% total average CTR for the day. When I check my top channels. It seems someone click twice the advertisement block which has 15 impressions. So obviously, the CTR rate on that particular block was high. something like 20% ctr. Now I would like to ask? is this dangerous? I mean. Is this something to be alarmed off? What should I look here. The CTR of each individual channel? or the Total average CTR I get on all of my channels? Thank you. for answering it