ncis s9 finale ratings TV ratings: 'NCIS' finale tops 'America's Got Talent' Tuesday, two hour 'Glee' fallsFast National ratings for Tuesday, May 15, 2012

The season finales of “NCIS” and “NCIS: Los Angeles” carried CBS to an across-the-board ratings win Tuesday, while night two of “America’s Got Talent” improved slightly in viewers but declined in adults 18-49.

Elsewhere, a double dose of “Glee” on FOX was down a little from its performance last week, and the season finale of “Private Practice” improved on its week-ago numbers.

CBS averaged 16.3 million viewers and a 10.3 rating/16 share for the night, leading second-place NBC (8.6 million, 5.3/8) by a wide margin. ABC (7.8 million, 5.3/8) came in third. FOX drew 6 million viewers and a 3.6/6, while The CW managed only about 830,000 viewers and a 0.6/1.

CBS also led the adults 18-49 demographic with a 3.2 rating. NBC was second at 2.8, followed by FOX at 2.5. ABC scored a 1.7 in the demo, and The CW came in at 0.4.

]]>8 p.m. CBS: “NCIS” season finale (18.7 million viewers, 11.8/19 households)
NBC: “America’s Got Talent” (10.4 million, 6.4/11)
FOX: “Glee” (6 million, 3.7/6)
ABC: “Cougar Town” – two episodes (3.3 million, 2.3/4)
The CW: “90210” season finale (1.1 million, 0.8/1) 18-49 leader: “NCIS” (3.5) 9 p.m. CBS: “NCIS: Los Angeles” season finale (15.2 million, 9.6/15)
ABC: “Dancing With the Stars” results (12.9 million, 8.6/13)
NBC: “America’s Got Talent” (10.45 million, 6.2/9)
FOX: “Glee” (6 million, 3.6/5)
The CW: “The L.A. Complex” (565,000, 0.4/1) 18-49 leader: “America’s Got Talent” (3.6) 10 p.m. CBS: “NCIS: Los Angeles” season finale (15.1 million, 9.6/15)
ABC: “Private Practice” season finale (7.05 million, 5.1/8)
NBC: “Fashion Star” season finale (4.9 million, 3.2/5) 18-49 leader: “NCIS: Los Angeles” (3.0)

Ratings information includes live and same-day DVR viewing. All numbers are preliminary and subject to change. Source: The Nielsen Company. More ratings at Zap2it: Daily, weekly and cable