The data displays leading ad supported broadcast and cable networks in the U.S. from December 26, 2016 to December 21, 2017, by number of total viewers. Fox ranked fourth, with telecasts reaching an average of 4.73 million viewers in the presented period. At the top of the ranking was CBS, which averaged about nine million viewers in 2017. The leading primetime series on the network during the 2016-17 season was The Big Bang Theory, which averaged 22.73 million viewers. Other popular CBS series include Bull, NCIS, and Blue Bloods.
