Your time was 7:18, so I suppose at the beginning of the day…
I’ve also noticed that in low irradiance - meaning at the beginning or end of the solar day - the behavior of the MPPTs are a little strange.
They are wandering quite heavily. Probably the way they implemented their algorithm.
Take a look at one of my MPPTs (the second from the videoclip) here: Strange behavior (bug?) of one MPPT in a Multi RS
In my case the panel configurations among trackers are identical - size, orientation, etc, - and you can see that the stable one (first) had settled on a much lower value (50W) than the value the array can give at max (100W).