[Estimates are based on data from the Commodity Flow Survey. Because of rounding, estimates may not be additive]
|Shipment Weight||Value||Tons||Ton-miles||CV of average miles per shipment|
|CV||Std. error of percent||CV||Std. error of percent||CV||Std. error of percent|
|All shipment sizes||40.4||–||21.3||–||21.0||–||S|
|Less than 50 lbs||17.2||2.3||25.0||–||43.6||1.7||38.0|
|50 to 99 lbs||45.4||2.9||34.8||–||35.1||0.1||29.5|
|100 to 499 lbs||25.3||4.2||33.9||0.4||29.5||0.3||16.6|
|500 to 749 lbs||42.8||0.6||S||S||40.1||0.2||35.1|
|750 to 999 lbs||42.9||0.4||S||S||41.8||0.1||33.6|
|1,000 to 9,999 lbs||S||S||S||S||44.5||3.3||30.7|
|10,000 to 49,999 lbs||S||S||24.8||7.4||26.5||6.7||31.7|
|50,000 to 99,999 lbs||S||S||36.3||1.5||27.9||0.8||47.9|
|100,000 lbs or more||S||S||S||S||S||S||S|
– Represents data cell equal to zero or less than 1 unit of measure.
S Estimate does not meet publication standards because of high sampling variability or poor response quality.
CV Coefficient of variation of number
NOTE: The Introduction and appendixes give information onf confidentiality protection, sampling error, nonsampling error, sample design, and definitions. Links to this information on the Internet may be found at www.census.gov/cfs.
SOURCE: Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, Metropolitan Data, December 2004.