NBC has tied for #1 for week 10 in adult 18-49 rating. For the first time in 10 years, NBC has finished #1 or tied for #1 during nine of the season's first 10 weeks.

Versus the same week last year, NBC is up 13% in 18-49 (2.6 vs. 2.3) and up in all other key categories by double-digit percentages.

Season to date, NBC is now up 23 percent versus one year ago (3.2 vs. 2.6), having moved from #4 at this point last year to #1 this year

NBC's 3.2 season average is its highest average at this point in the season in five years (since 2007).

NBC's 14 percent lead over #2 CBS in 18-49 (3.2 vs. 2.8) is the biggest for any network at this point in the season in 10 years (since NBC led by 17% at this point in 2002).

For the Week:

* NBC is up versus the same week last year in every key ratings category by double-digit percentages. "Sunday Night Football" was the #1 primetime show of the week on ABC, CBS, NBC and Fox in adults 18-49 and total viewers, adults 18-34, adults 25-54, all key adult-male demos and teens 12-17.

* NBC had 3 of the top 7 primetime shows in 18-49 on ABC, CBS, NBC and Fox: #1 SNF, #4 Monday Voice and #7 Tuesday Voice.

Here are "live plus same day" weekly averages for Week 10...

Week 10 Adults 18-49 vs. Same Week Last Year
Net...Week 2011... Week 2012...Diff
NBC...2.3...2.6...Up 13%
CBS...2.2...2.6...Up 18%
ABC...1.8...2.1...Up 17%
Fox...3.0...1.8...Down 40% Week 10 Total Viewers vs. Same Week Last Year
Net...Week 2011... Week 2012...Diff
NBC...7.276 million ...7.974 million...Up 10%
CBS...8.952 million...11.418 million...Up 28%
ABC...6.448 million ...8.034 million...Up 25%
Fox...8.619 million ...5.203 million...Down 40%

In 18-49 so far this season, NBC's schedule includes:

* The #1 primetime series on the broadcast networks, Sunday Night Football.

* 4 of primetime's top 8 programs on the broadcast nets (#1 "SNF," #4 Monday's "The Voice," tied for #6 Tuesday's "The Voice" and #8 "Revolution").

* The #1 unscripted series, The Voice.

* The #1 new drama and #2 drama overall on the broadcast nets, Revolution.

* The #1 new comedy, Go On.

* The #1 Friday series, Grimm. Rankings exclude sports pre- and post-game shows.

NBC currently accounts for four of the top six new shows of the fall in 18-49:
1. Revolution, 4.6
2. Elementary, 3.5
3T. Go On, 3.1
3T. Nashville, 3.1
5. Chicago Fire, 2.7
6. New Normal, 2.6

In addition to being up for the season by 23 percent in 18-49 (3.2 vs. 2.6), NBC is up 21 percent in total viewers (8.9 million vs. 7.4 million) and up by double-digit percentages in all other key categories. NBC is the only network among ABC, CBS, NBC and Fox that's up versus year-ago averages in 18-49, total viewers or any other key measure.

Here are "most current" season averages thru 10 weeks...

Season to Date Adults 18-49 vs. Last Year
Net...Season to Date 2011... Season to Date 2012...Diff
NBC...2.6...3.2...Up 23%
CBS...3.4...2.8...Down 18%
ABC...2.8...2.6...Down 7%
Fox...3.4...2.4...Down 29%

Season to Date Total Viewers vs. Last Year Net...Season to Date
2011... Season to Date 2012...Diff
NBC...7.382 million ...8.913 million...Up 21%
CBS...12.684 million...11.718 million...Down 8%
ABC...9.758 million ...9.168 million...Down 6%
Fox...9.436 million ...6.853 million...Down 27%

Median Age

NBC is the only network among ABC, CBS, NBC, Fox and CW whose audience has gotten younger this season versus last:

Network...'11-12...'12-13
NBC...48.9...47.7
CBS...54.7...56.6
ABC...52.8...53.6
Fox...45.8...46.3
CW...37.0...40.9