Jay Leno'sratings again fell below those of O'Brien's on a calendar week basis (2010 vs. 2009).
Leno'sfor the week of September 27 - October 1 averaged a 1.0 with adults 18-49, while 's averaged a 1.1 adults 18-49 rating for the comparable calendar week last year (September 28 - October 2, 2009).
Letterman's The , and the comparable week a year ago ended on October 2, 2009. staff member extortion story broke on October 1, 2009scored at a 0.9 adults 18-49 rating last week. Timing note:
The chart shows the late night adults 18-49 weekly average ratings for 2009 and 2010.
Note: The week ending 7/2/2010, thewas in repeats, and was delayed by Wimbledon coverage. The week of 7/9/2010 the was in repeats, and both shows Monday airings were excluded because of the holiday. For the weeks ending 7/16-8/6, was a repeat only on Friday. The week ending 8/13, was encores all week. Both Late Show and Tonight Show were repeats the week ending 8/20. For the week of 9/3/10, Late Show ratings were based on four days only. Note for the week of 9/10/10 NBC's Thursday telecasts were delayed by a primetime NFL overrun. Friday's "Late Show" was an encore, Monday results are excluded from these averages due to the Labor Day holiday. Late Show was in repeats the week of 9/17/10.