Hello Timjbaer

                          The logs are Values read by technicians from the internet provider end, since the logs are what the coaxial cable transmits and the log screen on the router is the translator so can be easily read by them, the coaxial cable is owned by the Internet service provider, I wouldn't be able to tell you what that means.

                            If your Event Log is reporting a high volume of errors, this would indicate a potential CMTS signal issue. Please use the below link to check the modem cable signal level on the modem interface to confirm the vales of downstream and upstream channels.

                                 http://arris.force.com/consumers/articles/General_FAQs/SBG7600AC2-Cable-Signal-Levels

 Let us know if this helps.