How to trace which adsense ad bring that " earnings "

noticed today , traffic is lower than yesterday

just 2 clicks , I can get 2 bucks more than yesterday have more than 2 clicks yet earn just 1 bucks +

So i feel must be some ad bring that much

possible to trace which ad? which page bring that amount?

Hi. May I know the website?

You can't particularly track any ad that has been showing in your website.
Ads differ from countries to countries, cookies, and so on.
Although, you can check the high paying CPC keywords on your niche from adwords.