Figure 6 NTL Reference Service Interactions by Month - November 2008 to September 2009

Figure 6 NTL Reference Service Interactions by Month - November 2008 to September 2009

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Month Nov. Dec. Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sept.
Total 820 968 1,147 1,521 1,681 1,376 2,433 1,769 2,476 2,063 1,910

SOURCE: U.S. Department of Transportation, Research and Technology Administration, Bureau of Transportation Statistics