Help with packet-loss graphs // request regarding MCS auto-scale in graphs.

1- What's going on with these packet-loss plots? 

Maybe the readings are so close to zero in the first plot, and in the second tending to zero causing some glitch. 

Possibly an auto-scale problem, maybe setting a minimum step could fix it?

2- Auto-scaling should not be enabled for the MCS plot.

There will never be a situation where it will be over 15 (picture 2)

Small variations can be exagerated and actually decrease readability of the  graph (picture 4)

MCS 14,5?  is that reading something like ["in the last 5 minutes i modulated 50% 14 and 50% 15"]??