How Tepid?

TV Week article says viewership of Monday’s conventioneering was “tepid”:

Preliminary national television ratings data from Nielsen Media Research indicate that interest in the first night of the Democratic convention as covered by the three major broadcast networks was tepid, to say the least.

The 10-11 p.m. hour of convention coverage of Michelle Obama’s big night on ABC, CBS and NBC added up to slightly less than 12.5 million viewers combined. NBC scored the largest audience.

But then they don’t compare to the ratings for 2004 or 2000. And this doesn’t include the cable viewership. So what does this really tell us? As best I can tell, nothing. It would be interesting to know if interest in the convention is up or down from four years ago, though.