Early to bed?

I used to enjoy watching BBC's question time and yesterday's, was as controversial as expected. I could actually have tuned in via computer but forgot.

The viewing figures interested me but not just because they were up by quite a bit. Using the actual figures quoted as watching and the share of total viewers at the time according to whether the show was on at 9.00pm or 10.00pm, I calculated that there were normally around 12 million people watching TV when it was on just after 10.00pm but around 22m watching at 9.00pm.

So that's getting on for half the TV audience @ 9.00pm switching off and presumably going to bed shortly after 10.00pm. Unless they're doing something else...like watching a DVD;)

I had thought the people of Moncton or NB in general went to bed early judging by the lack of residential lights one sees after 10.00pm compared to earlier. Maybe it's Brits too.

Or maybe 10m viewers just switch the telly off early on Thursday nights?