Would this be considered a bug in graphing?

This is on a L2TP tunnel that has very low traffic

I have no problem with the daily or weekly graph, the monthly and yearly are in question

Link is a 1.5M/640K DSL line so the peak reading of 6MB on the monthly graph is not possible!

This has been noticed in all of the 4.x versions I have installed, may go back further. Currently running 4.9 on a RB532

Thanks

Jerry

funny ))

also (sorry for stealing your topic ), what is the scale for Resource: CPU graph in WinBox? it is showing ~0 lines, but correct info when dragging: