GivEnergy Monitor for Android

On https://www.givenergymonitor.co.uk/clipping.html
Orange looks like total (PV1 + PV2) generation power so what is the yellow ?
Also a lot of my PV graphs are not smooth they are very spiky all the time - is that normal ?

For a Hybrid with 2 strings, yellow is PV1 and Orange PV2.
AC3, AIO, and systems with only 1 string connected will just be yellow.

And yes, the Solar will look spiky for the past week. Had a few smoother days around the May bank holiday. Normal for UK weather.

OK, thanks. It was the fact that yellow and orange were not similar amplitude - but of coarse that would not work visually! I am used to just 1 graph for total PV on other apps.