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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Table B-16c. Estimated Standard Errors for Hazardous Material Shipment Characteristics for Export by Country of Destination: Percentage of Total for 2012 and 2007

Monday, July 13, 2015

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(Estimates are based on data from the 2012 and 2007 Commodity Flow Surveys)

Country of destination Value—
standard error
standard error
Ton-miles (1) —
standard error
2012 2007 2012 2007 2012 2007
Total 0.0 0.0 0.0 0.0 0.0 X
Canada 2.1 4.1 4.0 7.1 3.9 X
Mexico 5.3 4.5 7.6 5.4 7.1 X
All other countries 5.7 5.3 8.1 7.5 4.4 X

KEY: X = Not applicable.

(1) Ton-miles estimates are based on estimated distances traveled along a modeled transportation network. See “Mileage Calculations” section for additional information.

NOTES: The Introduction and appendixes give information on confidentiality protection, sampling error, nonsampling error, sample design and definitions. Links to this information on the Internet may be found at <>.

SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics and U.S. Department of Commerce, U.S. Census Bureau, 2012 Economic Census: Transportation Commodity Flow Survey, December 2014.