After twenty one weeks of the 2012-2013 broadcast television season (through Sunday, February 17, 2013), CBS is in first place among adults 18-49, with a 3.2 rating average,even with last season. NBC was second, with a 2.7 rating average, even with last season. FOX was third with a 2.5, down 24% from last season. ABC was fourth with a 2.2, down 12% from last season. The CW finished last with a 0.7 adults 18-49 rating average, down 13% from the previous season.
Among total viewers, CBS is ahead for the season averaging 12.587 million viewers. NBC is second with 7.774m, followed by ABC with 7.695m, FOX with 6.969m, and CW with 1.857 million.
Each adults 18-49 rating point is a percentage of the adults 18-49 US TV population and equals 1.265 million adults 18-49. The season-to-date numbers are "Most Current" ratings, which are Live+7 Day for all but the two most recent weeks and Live+ Same Day for the two most recent weeks.
You can see last week's broadcast network primetime weekly TV ratings results here.
Nielsen TV Ratings Data: ©2013 The Nielsen Company. All Rights Reserved.