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 and were repeats the week ending 8/20. For the week of 9/3/10, 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.