Up And Down Adult Serps

Since 9 March and more three week (15 March) . Adult Google serp is whatever , right ?

15 march to 22 march average the websites on adult query move one time.

22 march to 24 and 24-25 march, the websites remove again maybe each datacenter.

One time we can see a great sites with good content / good netlinking and after sites with poor content / netlinking (like aggregator)

We know that we need waiting maybe one month after the google update deploy

But its really crazy. A site come with +40 ~+70 in top 10 in less some hours the site go out , and after maybe some hours come again in serp.

Screenshoot speak for themselves (on the biggest query) :

24 feb to 25 march

hxxp://prntscr.com/iw30o0

19 march to 25 march

hxxp://prntscr.com/iw30ah

Three screenshot on big query, my question is WTF ?
Top 10, we can see the leader (ok) and some aggregator with bad linking and shit content

On mainstream serps, the update have been deploy but this up and down is not like this.

hxxp://prntscr.com/iw2y29

is that we can talk about on an adult google update filter ?

Any sources about ? (not post update global, we know that. But a real adult update signal informations )

I open the subject and we can talk about this. I would like to read your opinion. Your own feelings on this up and Down.