Estimates are based on data from the 2007 Commodity Flow Survey. Because of rounding, estimates may not be additive.
|Export mode of transportation||Value||Tons||Value||Tons|
|Percent||2007 (thousands)||Percent||CV 1||Standard Error of %||CV||Standard Error of %|
|Air (incl truck and air)||279,987||32.1||3,671||0.8||4.5||0.7||6.2||0.1|
|Parcel, U.S.P.S. or courier||57,293||6.6||511||0.1||4.6||0.4||6||-|
|Other and unknown modes||38,262||4.4||18,002||3.8||5.9||0.3||10.2||0.5|
KEY: S = Estimate does not meet publication standards because of high sampling variability or poor response quality. - = Zero or Less than half the unit shown; thus, it has been rounded to zero.
1 Coefficient of Variation.
2 "Truck" as a single mode includes shipments that were made by only private truck, only for-hire truck, or a combination of private and for-hire truck.
3 Estimates for pipeline exclude shipments of crude petroleum.
NOTES: Value-of-shipment estimates have not been adjusted for price changes. Estimated measures of sampling variability for each estimate known as coefficients of variation (CV) are also provided in these tables. More information on sampling error, confidentiality protection, nonsampling error, sample design, and definitions may be found at http://www.bts.gov/cfs.
SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics and U.S. Department of Commerce, U.S. Census Bureau, 2007 Economic Census: Transportation Commodity Flow Survey, December 2009.