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Table B–20 - Estimated Measures of Reliability for Shipment Characteristics by Commodity Group and Mode of Transportation for State of Origin: 2002 and 1997

[Estimates are based on data from the Commodity Flow Survey. Because of rounding, estimates may not be additive]

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All Commodities

Mode of transportation Value Tons Ton-miles Average miles per shipment
CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002
All modes 8.5 5.3 13.4 5.1 7.4 10.2 6.6 13.8 14.1 8.0 10.8 12.7
Single modes 9.9 6.1 15.7 4.7 7.1 9.8 5.8 14.1 14.6 12.5 6.0 14.1
Truck 10.5 6.3 16.4 5.0 6.9 10.4 5.9 5.5 9.3 14.6 4.7 16.3
Rail 13.7 13.4 24.9 12.6 22.4 23.7 11.0 25.7 22.0 8.2 8.2 11.4
Water S 39.8 S 46.6 44.4 185.8 45.7 45.8 141.8 22.3 S S
Air (including truck and air) 16.3 15.2 41.4 12.0 19.6 32.6 16.7 18.1 24.6 7.2 10.0 10.3
Pipeline S 49.0 S S S S S S S S S S
Multiple modes 16.5 3.0 22.2 46.1 32.5 34.4 42.9 28.3 44.1 4.5 7.8 9.2
Parcel, USPS or courier 18.4 4.1 23.9 15.5 7.4 19.5 12.9 14.6 22.6 4.5 7.8 9.2
Truck and rail S S S S S S S S S 22.0 23.6 42.5
Other multiple modes S 35.9 S S 36.3 S S 33.9 S S S S
Other and unknown modes 15.0 9.2 23.1 S 32.8 S 34.3 S S S 27.8 S

SCTG 01-05, Agriculture products and fish

Mode of transportation Value Tons Ton-miles Average miles per shipment
CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002
All modes 20.2 11.4 21.5 25.3 17.0 23.0 43.8 23.6 51.3 34.8 26.4 80.7
Single modes 18.0 11.9 19.8 29.0 16.3 25.9 48.3 20.4 81.2 44.7 26.3 90.6
Truck 18.4 11.9 20.5 25.4 15.6 24.9 44.5 19.5 90.8 44.5 26.3 90.4
Rail S 28.8 S S 37.4 S S 35.3 S 29.2 29.4 45.3
Water – S S – S S – S S – 28.4 –
Air (including truck and air) S S S S S S S S S 31.6 31.6 31.0
Pipeline – – – – – – S S S S S S
Multiple modes S S S 41.2 43.7 603.7 S S S 29.0 18.8 125.2
Parcel, USPS or courier S 44.3 S S 39.1 S S 40.2 S 27.4 22.6 137.2
Truck and rail S S S S 49.0 S S S S 40.2 32.8 25.7
Other multiple modes S S S S S S S S S S 31.6 S
Other and unknown modes S 46.9 S S S S S S S S 41.4 S

SCTG 06-09, Grains, alcohol, and tobacco products

Mode of transportation Value Tons Ton-miles Average miles per shipment
CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002
All modes 33.9 23.9 54.1 13.8 9.2 18.1 16.4 13.3 26.5 24.8 12.6 66.4
Single modes 35.2 24.0 55.0 13.8 9.4 18.3 17.5 13.7 26.1 16.7 9.8 53.0
Truck 35.4 24.0 54.6 10.8 9.3 14.4 13.7 14.2 21.1 16.6 9.9 52.6
Rail 36.5 35.1 158.3 S 35.2 S S 38.0 S S 27.9 S
Water – – – – – – – – – – – –
Air (including truck and air) – – – – – – – – – – – –
Pipeline – – – – – – S S S S S S
Multiple modes S S S S S S S S S 25.3 19.0 24.2
Parcel, USPS or courier S 31.7 S S 27.4 S S 35.8 S 25.7 19.7 24.5
Truck and rail S S S S S S S S S 31.6 30.8 50.5
Other multiple modes – S S – S S – S S – 31.6 –
Other and unknown modes S 36.1 S S 42.4 S S S S S S S

SCTG 10-14, Stones, non-metallic minerals, and metallic ores

Mode of transportation Value Tons Ton-miles Average miles per shipment
CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002
All modes 18.7 14.0 35.1 14.8 18.7 28.3 14.3 17.8 37.6 21.6 12.0 34.1
Single modes 19.1 13.7 35.8 14.7 18.8 28.6 14.3 18.2 38.1 15.0 12.3 23.9
Truck 20.5 13.9 35.4 15.9 18.6 29.1 12.7 18.5 30.4 12.6 11.4 19.9
Rail 48.1 29.1 148.5 37.9 38.3 54.1 39.4 28.9 126.7 27.8 S S
Water S – S S – S S – S 27.9 – –
Air (including truck and air) – – – – – – – – – – – –
Pipeline – – – – – – S S S S S S
Multiple modes S S S S S S S S S 28.8 31.6 444.2
Parcel, USPS or courier S S S S S S S S S 28.6 31.6 385.2
Truck and rail – – – – – – – – – – – –
Other multiple modes S – S S – S S – S 31.9 – –
Other and unknown modes S 47.7 S 38.2 S S S S S S 32.5 S

SCTG 15-19, Coal and petroleum products

Mode of transportation Value Tons Ton-miles Average miles per shipment
CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002
All modes 12.2 13.7 22.2 14.3 16.3 20.4 17.8 26.9 21.0 19.7 44.8 27.7
Single modes 9.6 14.2 20.4 14.0 16.5 21.1 15.6 27.4 21.0 19.1 44.1 26.4
Truck 10.3 14.8 22.8 22.2 18.1 31.5 16.7 45.0 29.6 19.2 45.5 26.7
Rail 17.5 22.6 26.2 15.7 25.5 26.1 15.8 28.0 21.6 5.9 2.5 5.3
Water – S S – S S – S S – 31.6 –
Air (including truck and air) – – – – – – – – – – – –
Pipeline – S S – S S S S S S S S
Multiple modes S 34.8 S S 36.4 S S 34.9 S 41.5 S S
Parcel, USPS or courier 42.3 32.9 109.5 47.4 34.6 593.6 42.5 35.9 217.5 41.4 S S
Truck and rail – – – – – – – – – – – –
Other multiple modes S 35.2 S S 36.4 S S 34.9 S 31.6 21.4 47.3
Other and unknown modes 43.5 S S S S S S S S S S S

SCTG 20-24, Pharmaceutical and chemical products

Mode of transportation Value Tons Ton-miles Average miles per shipment
CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002
All modes 14.4 12.1 23.1 20.7 17.3 30.0 18.8 15.7 43.3 17.3 19.1 31.5
Single modes 15.3 12.4 26.1 21.1 17.3 31.0 19.1 13.9 45.5 28.3 26.2 63.2
Truck 15.5 12.5 26.4 20.7 18.4 27.8 12.1 14.5 26.6 28.8 26.9 65.7
Rail 31.8 38.8 156.5 39.5 48.1 525.8 47.2 44.6 687.1 22.8 19.8 42.9
Water S S S S S S S S S 31.6 32.0 36.9
Air (including truck and air) 48.3 27.2 44.2 S 37.1 S S S S 17.4 11.5 19.2
Pipeline – S S – S S S S S S S S
Multiple modes 30.2 27.0 19.6 25.4 S S 27.9 S S 9.5 10.9 20.0
Parcel, USPS or courier 32.3 27.9 21.1 34.8 19.2 23.9 46.6 33.0 46.8 9.5 10.9 20.0
Truck and rail 40.7 S S 36.5 S S 36.3 S S 23.6 46.8 167.0
Other multiple modes S – S S – S S – S 33.4 – –
Other and unknown modes 43.8 18.5 26.2 S 17.7 S 49.5 38.3 30.2 S S S

SCTG 25-30, Logs, wood products, and textile and leather

Mode of transportation Value Tons Ton-miles Average miles per shipment
CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002
All modes 11.1 3.0 12.0 31.3 7.6 51.9 11.5 4.0 12.7 12.4 8.4 15.9
Single modes 6.5 3.1 6.7 31.6 7.8 52.7 11.7 4.0 12.9 20.5 13.1 15.6
Truck 6.4 3.3 6.7 32.6 8.4 55.6 13.2 4.7 14.3 21.1 12.1 20.0
Rail 23.6 19.3 43.7 19.6 18.1 27.7 25.2 18.1 38.3 11.9 11.6 20.0
Water S S S S S S S S S 31.6 31.6 0.1
Air (including truck and air) 27.8 20.2 23.1 28.5 35.3 89.1 36.3 47.5 77.6 13.2 15.1 12.0
Pipeline – S S – S S S S S S S S
Multiple modes 40.3 14.6 76.5 17.8 19.6 27.3 15.3 44.2 39.1 9.3 7.9 13.8
Parcel, USPS or courier 40.5 15.3 78.1 19.2 12.2 27.8 20.6 15.3 34.3 9.3 7.9 13.9
Truck and rail 39.6 S S 39.5 S S 45.8 S S 27.1 29.4 39.0
Other multiple modes S S S S S S S S S 31.6 31.6 S
Other and unknown modes 32.6 27.9 143.8 22.4 19.0 25.2 30.9 23.7 21.6 S 13.2 S

SCTG 31-34, Base metal and machinery

Mode of transportation Value Tons Ton-miles Average miles per shipment
CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002 CV
2002		 CV
1997		 Std. error of percent change 1997-2002
All modes 7.0 5.8 12.1 27.9 13.2 42.5 24.3 5.8 36.8 22.4 12.4 29.2
Single modes 7.9 6.9 14.3 28.0 13.4 42.9 23.1 5.9 34.7 34.9 14.8 50.9
Truck 8.6 7.4 15.2 29.6 14.1 42.7 23.0 7.8 30.4 25.6 14.2 38.1
Rail S 30.9 S 30.4 22.6 157.4 46.5 28.0 189.3 S 24.2 S
Water S 44.1 S S 43.4 S S S S 30.7 27.7 25.9
Air (including truck and air) 45.1 29.6 77.5 38.5 16.2 65.1 36.2 24.9 43.2 10.4 11.3 16.7
Pipeline S S S S S S S S S S S S
Multiple modes 18.6 17.0 27.5 49.3 14.3 122.4 S 28.7 S 17.2 10.5