[jennyp]

I've got a question for you (or anyone who knows). In the full table at the bottom of the article, the column headers say

• HH COV AA%
   
• HH AA (000)
   
• Per 2+ AA (000)
   
• Per 25-54 AA (000)
   

What exactly do they mean?

[Hoplite]

O'Reilly was on in 2% of households which could receive him, which equates to 1,720,000 total.

Per 2+ and 25-54 are demographic brackets (total and ka-ching!), and he had 1.3 viewers (2240/1720) per household.

All of the above takes into account the viewers surfing elsewhere during commercials, by averaging out the viewership: AA = Average Audience.

Caveat emptor - I'm not a TV stats guru, I was just curious myself and had some free time.