Conan O'Brien's fourth-week audience was smaller and younger.

In its fourth week on TBS, "Conan" scored 722,000 adults 18-34, up 8 percent over Thanksgiving week, and 1.13 million adults 18-49, up 5 percent. It had 1,457,000 viewers overall, down from 1,496,000 viewers overall for Thanksgiving week.

Also read: The Conan Joke That Derailed Any Hope of a Leno Deal

But TBS can take pleasure in the median age of the viewers, 32, down from 34 the week before. Networks can generally charge higher ad rates for younger viewers.

Conan's 1.0 rating puts him well behind the network late-night competition, but he also seems to have found his ratings bottom.

While NBC worried about him broadening his appeal for the "Tonight Show" audience, last week found him at his most delightfully weird. He performed one episode entirely in jeggings, and one of his all-time favorite guests, Kevin Nealon, broke up the usual Q&A interview format to deliver a long monologue about the dark side of Christmas.

Conan in jeggings: