Maybe nitpicking but IMO It is irritating, that the 0% value (zero) of the left y-axis doesn't match the 0 GBit/s at the right y-axis (per default).
I find it actually useful to have distinct scaling and offsets for the two y axis, because this way the available space is used more efficiently, no? After learning that these are not starting at 0, things should be clear.
What doesn't make sense for me: negative ranges, which I'll try to address soon.
thanks for your input, nusenu