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In the United States radio listenership is gauged by Nielsen and others for both commercial radio and public radio. Nielsen and similar services provide estimates by regional market and by standard daypart, but does not compile nationwide information by host. Because there are significant gaps in Nielsen's coverage in rural areas, and because there are only a few markets where the company's proprietary data can be compared against competing ratings measurers, there is a great deal of estimation and interpolation when attempting to compile a list of the most-listened-to radio programs in the United States. Nielsen itself admits the task of measuring individual shows would be too complicated and difficult for them to manage. In contrast, because most UK radio broadcasts are distributed consistently and nationwide, the complications of measuring audiences that are present in American radio are not present on British radio. ''Talkers Magazine'', an American trade publication focusing on talk radio, compiles a list of the most-listened-to commercial long-form talk shows in the United States, based primarily on Nielsen data and estimated to the nearest 250,000 listeners. In addition to Talkers' independent analyses, radio companies of all formats include estimates of audience in news releases. The nature of news releases allows radio companies to inflate their listener totals by obscuring the difference between listeners at any given time, cumulative listenership over a time frame, and potential audience. ==Popular radio shows in the United States== The total listenership for terrestrial radio as of March 2014 was 244 million,〔(The state of radio today: a focus on African-American & Hispanic audiences ). ''Nielsen Audio'' (April 2014). Retrieved May 6, 2014.〕 up from 230 million in 2005. Sirius XM Radio has a base of 25.6 million subscribers .〔Georg Szalai, ("Sirius XM Reports Record Quarterly Revenue," ) ''The Hollywood Reporter'', February 4, 2014.〕 American Top 40 attracts over 20 million listeners per week. Rush Limbaugh's show has been the number one commercial talk show since at least 1991 when record keeping began.〔 NPR's ''Morning Edition'' and ''All Things Considered'' are the two most popular news programs.〔 Tom Kent self-estimates his listenership at over 23 million weekly listeners over all of his network's programs, which span the classic hits, adult hits and hot adult contemporary formats.〔(HISTORY - Tom Kent Radio Network ). "2014: (…) TKRN reaches 400 station affiliate mark with over 23 million weekly listeners! "〕 Until the development of portable people meters, Arbitron (Nielsen's predecessor in the radio measurement business) did not have the capability to measure individual airings of a program the way Nielsen Ratings can for television, and as such, it only measures in three-month moving averages each month. Portable people meters are currently only available in the largest markets Arbitron serves. Thus, it is impossible under current survey techniques to determine the listenership of an individual event such as the Super Bowl. ''Talkers Magazine'' compiles Arbitron's data, along with other sources, to estimate the minimum weekly audiences of various commercial long-form talk radio shows; its list is updated monthly.〔(【引用サイトリンク】url=http://www.talkers.com/top-talk-radio-audience/ )〕 NPR and APM compile Arbitron's data for its public radio shows and releases analysis through press releases. Included is a list of the most-listened-to radio shows in the United States according to weekly cumulative listenership, followed by a selection of shows of various formats that are most-listened-to within their category. (Unless otherwise noted, the ''Talkers'' estimate is the source.) Note on broadcast time: because of the effects of time on North American broadcasting, nationally syndicated shows that air live will end up on different dayparts in different time zones. The above list makes note of this. Note that although shows such as Beck's and Levin's are listed under "West Coast" drive times, that their shows are based on the East Coast (and thus air in early midday and early evening time slots there). Their dayparts are indicated as such for the purposes of clarity and consistency. Sirius XM Radio was monitored directly by Arbitron from 2007 to early 2008. The latest numbers available, from early 2008 (prior to when XM and Sirius merged), have ''The Howard Stern Show'' being the most listened-to show on either platform, with Stern's Howard 100 channel netting a "cume" of 1.2 million listeners and Howard 101 (the secondary and replay channel) netting an additional 500,000 listeners.〔Hinckley, David. (Howard Stern rules satellite radio ). New York Daily News. 7 May 2008.〕 Eastlan Ratings, a service that competes with Arbitron in several markets, includes satellite radio channels in its local ratings; Howard 100 has registered above several lower-end local stations in the markets Eastlan serves, the only satellite station to do so.〔(【引用サイトリンク】title=Eastlan Ratings: Syracuse )〕 Virtually all of the most-listened-to radio programs in the United States are in English. Other than English, only Spanish has an audience large enough to establish national networks; data for shows in Spanish are much more limited. Other languages (Chinese, Korean, various languages of India, and French) are broadcast only on a local level. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「List of most-listened-to radio programs」の詳細全文を読む スポンサード リンク
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