Networks sell advertising time based principally on...

Networks sell advertising time based principally on their performance among key demographic groups, which vary based on the time of day. Ratings performance in these categories gives a rough indication of network revenues in that day part. The November sweeps are used to set local ad rates.

Prime Time

Ratings for adults, 18-49

Size of group: 123,150,000

NBC

Nov. Sweep: 7.2

Season to date: 7.0

ABC

Nov. Sweep: 5.9

Season to date: 5.9

Fox

Nov. Sweep: 5.7

Season to date: 5.4

CBS

Nov. Sweep: 4.6

Season to date: 4.5

UPN

Nov. Sweep: 2.2

Season to date: 2.1

WB

Nov. Sweep: 1.4

Season to date: 1.4

Note: Each rating point equals 1% of group

Sources: A.C. Nielsen Co, networks

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