Hey RIO, i would like your opinions on these 2 graphs , its a mixture of PLO25 and 50 zoom :

First graph reps when i play any day exactly between 18:00 - 22:59
1.

Second graph reps when i play any day for the rest of the hours:
2.

The difference between these two graphs strikes me. At first i thought it can be due to variance and winrate itself,in a sense if winrate is very low, the swings are very big, however i am starting to be more and more confident this is not the case.

I wake up every day between 9-11 , sleeping 8-9 hours, and then after i eat lunch i go take nap for another 1-2 hours (yes i sleep too much). I am starting to think my results has nothing to do with what players are in pool during these hours and the rest , because if pool is "very bad" by default (it is) then upgrading it into "just bad" during hours i lose so much shouldnt make my graph pretty mirror-ish,but still maintain decent winrate. So that leaves only mental state to examine. I particularly dont feel tired , since i am playing more than 1/3 of volume during these hours (otherwise it would be a suicide), so what can it be? tilted and dont know about it? perhaps something to do with body (biological) hours?

I will stop playing during these hours anyway unless someone gives very good arguments, i just wanted to make sure i am not in some delusion but actually trying to give good reasons. Thank you for your time.