Arducopter V.3.5.3 (1a85c237) Mission Planner 1.3.50
Here is a log of VibeX,VibeY, VibeZ and Clip0, Clip1, Clip2.
I can’t figure out the relation in between the clipping and the X,Y,Z values?
Thank you for your help… 
Cheers
Henri
It is detailed in the wiki here: http://ardupilot.org/copter/docs/common-measuring-vibration.html
That is extremely bad vibration.