The network newscast ratings for last week are in and “CBS Evening News with Katie Couric” tied its all-time low in total viewers with an average of 4.89 million tuning in during the five days.

The low was set last June, when ABC also hit its own low. (Ratings records date back to the 1991-’92 season.) Last week, NBC averaged 7.42 million total viewers and ABC averaged 6.51 million.

• Our ratings report for last week is now available here.

Erica Hill filled in on Tuesday and Harry Smith was in Wednesday. Couric anchored from New York Monday and from Afghanistan on Thursday and Friday.