04/15/2008 05:12 am ET Updated May 25, 2011

Study: Rush Limbaugh's Ratings Best During His Commercials

Rush Limbaugh's fans are at their most numerous when he is not even speaking. That is among the findings of a study by Coleman Insights, a radio consulting firm, that uses newly available minute-by-minute listener data from New York, Philadelphia and Houston to map the ebb and flow of Mr. Limbaugh's audience.

The study found that Mr. Limbaugh's share of radio listeners was greatest during commercials, beating his share during on-air segments by 0.18 percentage point.

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