After ten weeks of the 2011-12 TV season (ending 11/27/11), Fox & CBS are tied among adults 18-49 ratings for the season with a 3.4 average(Fox is up 15% vs. last season and CBS is up 5% vs. last season). ABC is third with a 2.8 rating (even with last season). NBC is fourth with a 2.6 rating (down 7%). Univision is in fifth with a 1.5 rating average (down 7%). CW is sixth with a 0.9 rating average (down 25%).
With total viewership, CBS is comfortably leading averaging 12.86 million viewers. ABC is second with 9.99m, followed by FOX with 9.39m, NBC with 7.30m, Univision with 3.59m and CW with 2.08 million.
Note that these season to date ratings averages are "Most Current" ratings which is a combination of Live + 7 Day DVR viewing for weeks more than 2 weeks ago and Live + Same Day DVR viewing for the immediately preceding 2 weeks.
Nielsen TV Ratings Data: ©2011 The Nielsen Company. All Rights Reserved.