Income from YAN is falling - why?

Question

contextual advertising

Connected YAN affiliate program to the site. Set up 1 RTB block in the right column (2 ads, poster, vertical).
Attendance of the resource is 300-330 people per day, everyone is different (that's for sure. 80% of search engines).
On the first day, income was calculated at 300 rubles per 1,000 RTB impressions (revenue 45 rubles)
On the second day, income was calculated at 70 rubles per 1,000 impressions (revenue 17 rubles)
On the third day, 36 rubles were calculated per 1,000 impressions (revenue 2.4 rubles) .
Somehow it is not clear. Advertising is shown, but income is not counted)) What could be the matter?
PS: so far I have set a minimum CPM of 100 rubles for 1000 impressions, so as not to frighten people with advertising for nothing for a penny - advertising has completely disappeared ..

Answer 1

because 3 days is not significant. run at least for a month, then analyze.

Answer 2

With adsense income is 2 times more, just experimented on two sites. And so it has always been.