Lots of people have something on the TV just about all day long (or at least the whole time they're home—for retired folks this can actually be the entire day) and skew the numbers higher, I think. My parents do it, just leave the TV on even if they're not paying attention to it. I bet it's on 12+ hours a day at their house, on average. I have some friends whose home life was similar growing up—if someone's home, the living room TV's on, even if no-one's actually watching it.