Table B-9e. Estimated Measures of Reliability for Hazardous Material Shipment Characteristics by Air (includes Truck and Air) for Selected UN Numbers: 2002

Table B-9e. Estimated Measures of Reliability for Hazardous Material Shipment Characteristics by Air (includes Truck and Air) for Selected UN Numbers: 2002

[Estimates are shown as percents and are based on data from the 2002 Commodity Flow Survey]

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UN number Description 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
  Total 20.7 38.0 39.2 8.2
0012 Cartridges for weapons, inert projectile or Cartridges, small arms S S S S S S 24.3
0186 Rocket motors S S S S S S 31.6
1057 Lighters or Lighter refills containing flammable gas S S S S S S 39.7
1072 Oxygen, compressed S S S S S S 29.8
1197 Extracts, flavoring, liquid 49.8 0.2 S S S S 26.7
1648 Acetonitrile S S S S S S 28.2
1760 Corrosive liquids, n.o.s. S S S S S S 25.0
1845 Carbon dioxide, solid or Dry ice S S S S S S 25.0
1964 Hydrocarbon gas mixture, compressed, n.o.s. S S S S S S 31.6
1993 Flammable liquids, n.o.s. 44.8 0.4 S S S S 20.5
2047 Dichloropropenes.. S S S S S S 31.6
2283 Isobutyl methacrylate, stabilized S S S S S S 30.4
2794 Batteries, wet, filled with acid, electric storage S S S S S S 31.6
2811 Toxic solids, organic, n.o.s. S S S S S S 27.5
2915 Radioactive material, Type A package non-specified S S S S S S 27.9
3166 Engines, internal combustion, flammable gas powered S S S S S S 22.6
3178 Flammable solid, inorganic, n.o.s. S S S S S S 27.3
3268 Air bag inflators, or Air bag modules, or Seat-belt pretensioners S S S S S S 26.5
3295 Hydrocarbons, liquid, n.o.s. S S S S S S 31.3
3316 Chemical kits S S S S S S 30.1
All other 18.4 9.6 24.4 9.9 31.1 7.3 9.3

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

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.