What is the unit of vibration in the UAV logviewer?

Hi I was looking for the vibration data on the UAV log viewer however, I am not sure for the unit of vibration!! Can anyone please explain ?

According to the website http://ardupilot.org/copter/docs/common-measuring-vibration.html#vibe-dataflash-log-messag it is in m/s/s however in the log viewer I believe the unit is different or the method to read the Y axis ?