NEW YORK (CBS/AP) – Conan O’Brien has scored a victory in the ratings with the debut of his new TBS late-night show “Conan.”

The former host of “The Tonight Show,” who left NBC eight months ago, beat Jay Leno and David Letterman in the ratings.

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“Conan” drew 4.2 million viewers. Even more impressive, The Hollywood Reporter notes: 3.3 million of those viewers were adults in the coveted 18-49 age bracket.

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Leno’s “Tonight Show,” in comparison, had 3.5 million viewers, and Letterman’s “Late Show” drew 3.4 million.

“The Daily Show with Jon Stewart” was seen by 1.3 million viewers, followed by “The Colbert Report” with 1 million.

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