The mid-December ratings doldrums resulted in lower-than-usual ratings for Tuesday’s top shows, but ”NCIS”-led CBS and ”New Girl”-paced Fox were tops among young adults. NBC’s finale of ”The Biggest Loser” hit season highs and led its second hour in demos but finished below last year’s score.

CBS opened a winner with ”NCIS” (3.5 rating/10 share in adults 18-49, 19.0 million viewers overall), on the low side of its range but still standing as the night’s No. 1 program, according to preliminary national estimates from Nielsen. It was followed by another winner, ”NCIS: Los Angeles” (3.0/8 in 18-49, 16.3 million viewers overall), and ”Unforgettable” (2.1/6 in 18-49, 11.2 million viewers overall), which ran second among the broadcasters in demos while easily winning in total viewers.

At Fox, the Christmas episode of ”Glee” (2.9/8 in 18-49, 5.3 million viewers overall) was in line with last week’s performance, placing second in 18-49 and a dominant leader among the under-35 crowd. ”New Girl” (3.3/8 in 18-49, 6.8 million viewers overall) and ”Raising Hope” (2.3/6 in 18-49, 5.1 million viewers overall) were also on par with week-ago levels, with ”Girl” winning the 9 o’clock half-hour in demos.

For the night, Fox tied CBS for the lead in adults 18-49 (2.9/8), with the Eye pulling comfortably ahead in both adults 25-54 (4.2/10) and total viewers (15.5 million).

NBC did little in the night’s opening hour with the special ”William and Kate: Inside the Royal Marriage” (1.2/3 in 18-49, 5.3 million viewers overall) but picked up from 9 to 11 p.m. with the conclusion of ”The Biggest Loser” (2.7/7 in 18-49, 7.8 million viewers overall). Despite growing more than 20% week to week for a season high, the weight-loss contest shed one-third of its young-adult audience from last year’s fall finale; still, it led its second hour in both 18-49 (2.9/8) and 25-54 (3.5/9).

At ABC, ”Last Man Standing” hit a low (2.2/6 in 18-49, 7.5 million viewers overall), down 19% from last week when it didn’t face an ”NCIS” original. A ”Last Man” repeat at 8:30 p.m. (2.0/5 in 18-49, 6.1 million viewers overall) did better than last week’s final episode in the timeslot for ”Man Up” (1.6/4 in 18-49). The Alphabet wasn’t competitive the rest of the way with repeats of ”The Middle” (1.5/4 in 18-49, 4.6 million viewers overall), ”Suburgatory” (1.3/3 in 18-49, 3.8 million viewers overall) and ”Body of Proof” (1.1/3 in 18-49, 4.8 million viewers overall).

And CW barely registered with repeats of ”90210” and ”Ringer,” averaging just 700,000 viewers on the night.

Preliminary 18-49 averages for the night: CBS and Fox, 2.9/8; NBC, 2.2/6; ABC, 1.5/4; Univision, 1.4/4; CW, 0.3/1.

In total viewers: CBS, 15.5 million; NBC, 7.0 million; Fox, 6.5 million; ABC, 5.3 million; Univision, 3.5 million; CW, 0.7 million.