I am going to put my adsense ad on different website now. I want to keep a track like "number of impressions - $$ of earning" from all particular website. I know "channels" would help me keep an exact track. But can you guide me what exactly will i have to do? For example, i have website 1 and 2. I am putting my ads on both of them. How will i know how many impressions along with the $$ did i get for that respective day on that 1 and 2? Thanks.