Random, irregular disconnects/ modem rebooting

[pzzz5]

I have been having internet issues at my apartment where the modem would disconnect and restart on its own at irregular intervals. This has been an issue for months, but this happens much more often on days where the weather is nicer (55F or above, no precipitation) and rarely on cold/rainy/snowy days. 

Here is a link to the logs and downstream/upstream info.

https://imgur.com/a/w0ittYH

Any ideas as to what may be causing this?

Edit: This happens both when connected to wireless and ethernet.

[EG]

What is the exact make and model number of that modem ?

[pzzz5]

Thanks for your quick response.

The modem is a Motorola SB5101U Surfboard Modem.

[EG]

O/k the stats are good but that thing is a DINOSAUR !!! I'm surprised that it still even works on the system !! It's an old single upstream and single downstream channel DOCSIS 2.0 device that is no longer supported. Time to upgrade to a more modern DOCSIS 3.0 or a 3.1 device. It will provide more reliability and better speed stabilty !!

[pzzz5]

I see, thanks for the information. 

[EG]

Quite welcome. Good luck !