Nielsen ratings

Prime-time viewership, in millions, compiled by the Nielsen ratings company for the week ending March 9.

1. "The Big Bang Theory," CBS, 18.09

2. "NCIS," CBS, 17.85

3. "The Voice" (Monday), NBC, 15.62

4. "The Voice" (Tuesday), NBC, 14.53

5. "NCIS: Los Angeles," CBS, 14.37