Jay Leno's Tonight Show tied Conan's ratings on a calendar week basis (2010 vs. 2009) again, making it three ties in the last four weeks. Leno's Tonight Show ratings tied Conan's Tonight Show ratings for the comparable calendar week (July 26-30, 2010 vs. July 27-31, 2009).
Leno still came out ahead of Letterman who was down a tenth of a ratings point year over year falling to a 0.7 rating with adults 18-49.
The chart shows the late night adults 18-49 weekly average ratings for 2009 and 2010.
Note: The week ending 7/2/2010, the Tonight Show was in repeats, and was delayed by Wimbledon coverage. The week of 7/9/2010 the Late Show was in repeats, and both shows Monday airings were excluded because of the holiday. For the weeks ending 7/16-7/30, Late Show was a repeat only on Friday.
No more chart of the sequential weeks comparison between Conan and Leno. That chart was always a bit apples/oranges because of the different seasons. While before the calendar runs of the shows overlapped we had to make do, now that we have some of the same time period to compare, the sequential chart has been retired.