Those signals look pretty good. The downstream power level is a little high but that shouldn't cause too much trouble. If you would like to message me with you account number or phone number I will be happy to check your modem a bit closer.
I'm experiencing the same issues for about 2 hours nearly every morning. The modem resets itself over and over. Because I have phone service too I lose it as well. Definitely frustrating -- The right road is often the lonely road.
The outside splitter has been swapped with a three way the Mediacom tech left last time they were out. The connection seems more stable now. I'll have to wait and see how it dose now in the evenings when in use.