Ratings: Dancing's Grand Finale Trips Up, NCIS Down, Parenthood Steady

Dancing With the Stars ended its 13th cycle on a down note.

Tuesday’s two-hour finale — which saw J.R. Martinez waltz off with the mirror ball trophy — averaged 19.5 million viewers and a 4.1 rating in the 18-49 demo. That represents a steep 20 percent decline from last year’s fall finale (featuring champ Jennifer Grey champ.)

A special Tuesday edition of X Factor, meanwhile, drew 9.4 million sets of eyeballs and a 3.2 demo rating — off 18 percent compared to last Wednesday’s performance show.

Going hour-by-hour….

8 pm | NCIS led among viewers, although its 18.5 million tally was off 13 percent week-to-week. ABC’s sitcombo of Last Man Standing and Man Up! was up a tick in both viewers (9.3 mil and 6.8 mil, respectively) and the demo (2.7 and 1.9).

9 pm | NCIS: LA placed second behind the first hour of DWTS with 14 million and a 3.0 rating (off 12 percent week-to-week).

10 pm | Unforgettable trailed the final hour of DWTS (10. 3 million and 2.2, down 8 percent). Parenthood was steady in the demo (1.9) and up a tick in viewers (4.5 million).