Searching the Nielsen rankings for a specific television program's current season is impossible, but The Nielsen Company does release top 10 lists of the most watched shows. Numerous other websites release Nielsen-related data, such as Tvbythenumbers.zap2it.com.
The Nielsen Company releases top 10 lists every week, month and quarter. The lists include numerous categories, such as television ratings, video games, books, movies and music. Nielsen provides filters for the television ratings, such as prime time broadcasts on network television, cable network television, syndication network television, prime time broadcast programs amongst Hispanics and prime time broadcast programs amongst African Americans. Nielsen also provides brand memorability ratings for television advertisements.
TV by the Numbers provides both daily and weekly ratings in the form of top 25 lists. TV by the Numbers breaks the numbers down in a similar fashion to Nielsen, with lists often separated by cable and network television, but TV by the Numbers also offers statistics based on age, including the coveted 18 to 49 age group. Finally, TV by the Numbers also produces DVR numbers and opinions on whether certain shows will be renewed or canceled. TV by the Numbers uses what they call the "Renew/Cancel Index", a score that is highly influenced by a program's rating among viewers aged 18 to 49.