The histogram below contains comparative Nielsen ratings for the Indianapolis 500 from 1996 through 2009. Information that is relevant to the data is listed below the graph.
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- 1997 - 2 days of rain; all but 13 laps completed on Tuesday
- 2004 - flagged due to rain at 180 laps
- 2005 - Danica leads late in the race
- 2007 - includes a rain delay and flagged due to rain