Figure 4 - Value Per Ton of Shipments by Distance Shipped: 1993 and 2002
Figure 4 - Value Per Ton of Shipments by Distance Shipped: 1993 and 2002
(Commodity Flow Survey Data Only)
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NOTE: Shipments are grouped into distance categories based on Great Circle Distance (GCD), GCD is the shortest distance between 2 points on the surface of a sphere.
SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, based on data from the 1993, 1997, and 2002 Commodity Flow Survey, December 2004.