11/03/2010 05:12 am ET Updated May 25, 2011

'Tonight Show' Ratings: Worst Summer EVER

"The Tonight Show With Jay Leno" is pulling a smaller number in the advertiser-coveted adults 18-49 demographic than when Conan O'Brien hosted the show last year.

In fact, this summer is the lowest-rated "Tonight" on record, though such feats have become increasingly common on broadcast across the board.

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