By James Hibberd
March 02, 2012 at 04:21 PM EST

NBC’s Awake premiere delivered the best rating in its time slot all season … if only that was a bigger compliment.

Awake was seen by 6.2 million viewers and had a 1.9 rating in the adult demo at 10 p.m. on Thursday night. That’s up a steep 58 percent than average rating for NBC’s short-lived series The Firm and Prime Suspect in this hour, plus it improved upon its Up All Night lead-in (3.5 million, 1.6).

But with rivals ABC and CBS airing repeats last night, this is a pretty soft debut. Hopefully the positive reviews from critics will help the show build in the coming weeks, or at least maintain its current numbers. NBC also had its comedy block. Most shows delivered slight gains, though Parks & Recreation (3.8 million,  1.7) was flat.

Also last night:

CBS got a look at Rob (9 million, 2.6) without a new episode of top-rated Big Bang Theory for a lead-in. The show’s finale had a chance to stand on its own. It dropped 10 percent, yet delivered a number that CBS’ rivals would be satisfied with in this slot. Is it enough for CBS to give the comedy a second season?

Over on Fox, Big Bang taking a break probably helped Fox’s American Idol (18.3 million, 5.3). The singing competition jumped 18 percent to post its biggest Thursday rating this season.