After eight weeks of the 2010-11 broadcast season, Fox is now down 19.7% vs. last season in the all important adults 18-49 ratings that’s a bit better than its season to season comparison last week.

Again, ABC’s season to season declines are hidden behind the smokescreen of an even worse decline for a competitor (last season it was media pincushion NBC). This season they’re 8.3% behind last season’s adults 18-49 ratings, which is a bit worse than the comparison last week.

Instead of being fractionally ahead of last season the CW (-0.4%) is now fractionally behind, that’s even after replacing the one hour of their schedule (10%) that was a scheduled repeat with an original series.

CBS’s (+3.2%) and NBC’s (+2.3%) adults 18-49 ratings are all still ahead of last season’s, although NBC is spending a lot more this season after replacing 5 hours of The Jay Leno Show with mostly scripted dramas.

Univision continues well ahead (+16.4%) of last season’s adults 18-49 ratings.

Broadcast network season ratings overall: My calculation (not Nielsen’s) of the average adults 18-49 ratings season to date for the 5 English broadcast networks is 4.8% below the season to date ratings average through the same week of the 2009-10 season.

CBS maintains its season lead in primetime adults 18-49 ratings for the season averaging a 3.3 rating. Fox is in second place with a 3.0 adults 18-49 ratings average. NBC and ABC are tied in third with a 2.8 rating average.

CBS remains well ahead in the press release friendly season to date average viewership.

Each rating point is a percentage of the US TV population in that demographic group. A 1.0 adults 18-49 rating equals 1.315 million adults 18-49

The network’s average viewership is charted in millions of viewers, just like we report all other average viewership information on the site, and adults 18-49 is charted as ratings points. Note the units (million viewers on the left, rating on the right) below the bars.

Note that these season average ratings are “Most Current” measurements which are Live+7 day DVR viewing when available (2+ weeks after airdate), combined with LIve+Same Day DVR viewing for the most recent 2 weeks.

You can see past week’s broadcast network primetime season to date TV ratings results here.

Nielsen TV Ratings Data: ©2010 The Nielsen Company. All Rights Reserved.

Posted by:TV By The Numbers

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