For those who followed me.

This morning, the order bok is in a completely different configuration: I doubt that there is again a big margin of decrease (several orders of purchases with volume).
Now, whenever the dev is given good news about MTP or XZC is admitted to Poloniex, the possibilities of violent rebound are strong in the short term.
Moreover, Bitcoin has just seen a sharp rise and it is likely that it stabilizes or decreases slightly, so the alts had to go up in the next 2 or 3 days.

Good shopping :-) !