Table B-9d. Estimated Measures of Reliability for Hazardous Material Shipment Characteristics by Water for Selected UN Numbers: 2002
Monday, July 2, 2012
Table B-9d. Estimated Measures of Reliability for Hazardous Material Shipment Characteristics by Water for Selected UN Numbers: 2002
[Estimates are shown as percents and are based on data from the 2002 Commodity Flow Survey]
| 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 | 12.5 | – | 14.3 | – | 12.0 | – | S | |
| 1010 | Butadienes, stabilized | S | S | S | S | 41.4 | 0.5 | S |
| 1114 | Benzene | 41.9 | 2.1 | 39.8 | 0.8 | 36.8 | 0.5 | 27.8 |
| 1145 | Cyclohexane | S | S | S | S | S | S | 34.9 |
| 1202 | Gas oil, diesel fuel, heating oil, light | S | S | S | S | S | S | S |
| 1203 | Gasoline | 24.3 | 6.1 | 24.6 | 5.7 | 19.0 | 5.3 | S |
| 1223 | Kerosene | 45.7 | 0.6 | 41.1 | 0.7 | 40.6 | 0.5 | 30.4 |
| 1230 | Methanol | S | S | S | S | S | S | S |
| 1268 | Petroleum distillates, n.o.s. | 41.5 | 0.4 | 45.6 | 0.5 | S | S | S |
| 1270 | Petroleum oil. | S | S | S | S | S | S | 31.6 |
| 1307 | Xylenes | 37.2 | 0.5 | 38.0 | 0.4 | S | S | S |
| 1824 | Sodium hydroxide solution | 24.7 | 0.2 | 24.6 | 0.6 | 42.0 | 1.2 | 32.8 |
| 1830 | Sulfuric acid | S | S | 38.8 | 0.4 | 43.4 | 0.3 | 34.9 |
| 1863 | Fuel, aviation, turbine engine | 31.0 | 1.1 | 34.0 | 1.2 | 34.4 | 1.6 | 22.8 |
| 1964 | Hydrocarbon gas mixture, compressed, n.o.s. | S | S | S | S | S | S | 46.7 |
| 1993 | Flammable liquids, n.o.s. | 16.6 | 4.9 | 14.3 | 4.7 | 16.5 | 2.2 | S |
| 1999 | Tars, liquid | S | S | S | S | S | S | S |
| 2398 | Methyl tert– butyl ether | S | S | S | S | S | S | 30.4 |
| 2448 | Sulfur, molten | 44.1 | – | 49.9 | 0.2 | S | S | 30.1 |
| 3082 | Environmentally hazardous substances, liquid, n.o.s. | 48.3 | 1.8 | 47.7 | 1.0 | S | S | 30.0 |
| 3257 | Elevated temperature liquid, n.o.s. | S | S | 46.7 | 1.2 | S | S | 28.1 |
| – | All other | 14.2 | 2.0 | 12.9 | 1.4 | 18.5 | 2.6 | 22.7 |
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.