Reporting:Traffic graphs on 21.1.4_16-armv7?

[dgktkr]

I'm trying to make sense of what I see on the graphs show on the Reporting :Traffic page.

So I start playing a Netflix movie on my local machine and look at the OPNsense graphs in the Web GUI.

https://pasteboard.co/JYHGtem.png

First of all -- negative and positive bps? What's up with that?

Then, the x axis scaling is different for the total and top hosts graphs. That makes comparison not so easy.

And shouldn't adding the numbers for the top hosts shown at the bottom of the window add up to the total shown in the graphs at the top?