Assistance Regarding Differences in Adsense Click Rates

[DaySmilEe]

Hello everyone, Below I am sharing my AdSense earnings from yesterday, blurring out my site names. The themes and ad placements of the following 4 sites are identical. The only difference is the sectors of the sites. I want to point out that my 1st and 2nd websites are performing well, unlike the other 3 and 4 which have no traffic yet. Website 1: Click-through rate is 0.25%. Website 2: Click-through rate is 10.63%. So there is a difference, but it shouldn't be a 40-fold difference. Any ideas on the possible source of this problem? Thank you in advance for your help.