I have a complete Ovservium noob question to ask that i am a little embarrassed to ask, but i’m biting the bullet!

Currently running the subscription edition on a CentOS install - everything patched and current as of yesterday.

My question is about the graphs. I have attached a pic of a graph from a single port on a cisco switch - and i am interesred in the ‘In’ traffic —> there is a single, green, ‘in’ reference in the legend, but there are three distinct green indicators in the graph —> which one actually correllates to ‘In’, and why are there multiples.