leave it with this value for the next 24 hours.
With this low traffic at the evening it is a mission impossible to determine the correct gain settings.
Your first plot shows too much gain. After i got my new Jetvision antenna i needed to reduce it down to 40.2 which gave me the best value keeping an eye on the messages > 3dbFS (should be max 5%)
Now i am using a FA filter between antenna and blue FA stick.
Gain back to 49.6, but the messages > -3dbFS stayed below the “magic” 5%
But the low overall traffic makes it hard to determine if right or wrong.
This is the graph with the time i installed the filter. before that gain was at 40.2
Consider the small peak the same day in messages > -3dBFS
I had gain set to “-10” for a few hours, but it did not work, so i went down to 49.6 which seem to be fine now.