Help understanding log file output

I am wondering if anyone can help me understand my vibration log. I have recently done an upgrade to my dampening system on my 500 quad - I got one of those 3D printed cradles with the blue rubber dampening inserts. I have recorded this style of log over a couple of flights now and do not understand why the vibration line steps +ve then -ve.

I have had a search through forums but cant seem to find a similar case anywhere

Any help would be greatly appreciated

[attachment=0]log screenprint.png[/attachment]

Complete log is attached.


Hello - anyone have any suggestions at all - or have I missed something really basic??

Thanks and regards