HAZMAT Table B–11b ,,,,,,,,,,,,,
"Estimated Measures of Reliability for Hazardous Material Shipment Characteristics by Selected Commodities: 2002 and 1997
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"[Estimates are shown as percents and are based on data from the 2002 and 1997Commodity Flow Surveys]
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SCTG Code,Commodity Description,Value,,,Tons,,,Ton–miles,,,Average miles per shipment,,
,,CV,,Std. error of percent change,CV,,Std. error of percent change,CV,,Std. error of percent change,CV,,Std. error of percent change
,,2002,1997,,2002,1997,,2002,1997,,2002,1997,
—,Total,3.0,3.4,5.7,4.2,2.8,6.2,4.4,5.5,7.8,7.1,7.6,12.9
17,Gasoline and aviation turbine fuel,3.6,3.8,6.7,3.8,3.5,6.3,10.4,15.0,21.0,12.2,5.6,15.3
18,Fuel oils,8.1,4.3,11.4,8.1,5.4,11.3,9.5,15.1,20.4,7.6,5.7,10.6
19,"Coal and petroleum products, n.e.c.",11.7,9.1,19.4,12.6,8.7,19.4,13.7,12.1,25.3,19.9,7.9,25.8
20,Basic chemicals,11.1,13.9,17.9,19.6,7.7,28.0,11.9,14.7,16.4,13.6,20.9,45.2
22,Fertilizers,23.5,14.6,29.6,21.8,14.8,28.6,16.1,11.8,17.0,35.2,11.8,41.1
23,"Chemical products and preparations, n.e.c.",16.1,4.4,23.9,11.1,10.4,26.8,12.7,7.5,24.4,18.0,9.2,32.6
—,All other SCTG codes,7.7,12.5,20.4,19.5,7.2,29.4,13.1,6.2,20.4,11.4,15.2,13.6
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KEY: 
— Represents an estimate equal to zero or less than 1 unit of measure.
S Estimate does not meet publication standards because of highly sampling variability or poor response quality. 
CV Coefficient of variation of number",,,,,,,,,,,,,
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NOTE: 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 www.census.gov/cfs.",,,,,,,,,,,,,
"SOURCE: Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, Hazmat Data, December 2004.",,,,,,,,,,,,,




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