eCPM - Huge difference

Hello,
I'm new to BHW and to aldult websites/affiliate.
I created a porn tube site and started using exoclick to monetize it.

Exoclick:


My question is, why does the eCPM changed from 0,026€ one day to 0,76€ the next day?
This happened twice already, in random days apparently.
My visitors were the same, the countries was the same too, i just can't find an explanation to why that happened and what i should do to keep the eCPM like that always.

Thank you

interesting question but it seems that nobody has a answer lol

I have an exoclick account but their payouts were so low that I don't even use them anymore. Adult PPC/eCPM models seem to pay low generally anyway and yes, the numbers fluctuated waaaay too much anyway.