Ratings: Thursdays hold steady for CBS, ABC

NBC comedies lagged without the help of a new Office episode in the line-up last night; Parks and Recreation and 30 Rock both posted some of their lowest numbers yet. Grey’s Anatomy came back strong with its first new episode since November, and CBS’s procedurals continued to draw large numbers — from outside the 18-49 demo. On Fox, Bones proved its staying power, and Fringe saw modest improvement over where it left off this fall.

Source: The Nielsen Company