Looks like noise ingress. Please ensure a coax cables are fully seated and tight in their sockets. The figures are accumulative since the hub was last power cycled, which may be some time. So please, turn off hub for 2 minutes, turn on, then after about 2 hours post a new full set of stats. We can then see the current situation.
Tudor There are 10 types of people: those who understand binary and those who don't and F people out of 10 who do not understand hexadecimal c1a2a285948293859940d9a49385a2