Keep it running all day at the shortest sampling interval that you can. What happened at 10:46 or was that when you started it running?
The SNR graph seems a little odd being FLAT ! I would expect to see some minute by minute changes. This is an old one of mine showing both Down (Rx) and Up (Tx) figures.
SNR
It demonstrates how the noise level changes continually and the gradual changes over a day on the downstream.
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