] There are an estimated 105.5 million television
] households in the USA. A single ratings point represents
] 1%, or 1,055,000 households for the 2001-02 season

Weekly listing of the top 20 TV shows, by title, network, timeshot, and rating share. For this particular week, that meant a range of ratings from 7.9 to 12.4, or between roughly 8.5 and 13 million viewing households per show.

Nielsen TV Ratings