Nice. I think your point comes across much more clearly now. The eth presale graph is much smoother than all the others.

Could the smoothness be partially explained by the fact that one could only use btc in the eth presale, whereas later token sales accepted eth and btc?

Thanks!

Possibly, I don't know. The point of the post really was to show that the pre-sale process was amenable to a more forensic/scientific analysis than anything else.