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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 19.6 10.5 26.8 23.8 9.4 33.1 9.2 5.8 10.2 12.0 16.4 14.6
Single modes 23.2 13.3 34.6 25.9 7.9 39.0 10.8 6.5 12.2 22.9 16.0 29.3
Truck 7.7 2.8 10.7 36.8 10.1 54.1 8.5 3.7 10.0 10.6 16.0 16.6
Rail 17.9 10.1 22.2 25.9 20.8 67.3 25.6 13.1 27.6 8.3 7.9 12.7
Water 40.9 17.7 26.1 S 25.4 S 47.1 23.7 24.8 16.7 10.5 17.8
Air (including truck and air) S 38.7 S 37.3 23.5 88.7 S 23.2 S 4.8 3.1 6.8
Pipeline 9.0 31.9 48.6 11.7 33.2 53.8 S S S S S S
Multiple modes 17.7 15.5 22.7 16.3 18.3 16.4 18.8 10.8 21.4 9.9 10.4 11.0
Parcel, USPS or courier 18.3 17.4 25.2 19.7 11.5 27.4 26.6 19.9 34.4 10.2 10.5 11.1
Truck and rail 31.6 13.3 21.2 23.5 24.3 25.0 22.3 18.5 27.1 4.7 9.2 10.2
Other multiple modes 27.6 16.3 23.9 32.3 39.8 23.1 36.0 17.4 41.7 5.9 7.9 12.5
Other and unknown modes 27.8 14.7 15.4 27.1 30.5 21.1 17.8 S S S S 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 19.0 7.6 15.0 29.4 22.4 27.3 30.6 15.6 24.2 S S S
Single modes 19.6 5.4 19.2 30.3 20.1 48.4 31.3 17.9 27.9 S S S
Truck 17.8 10.4 18.1 25.3 15.0 44.0 29.8 14.9 38.5 S S S
Rail 45.6 23.2 368.1 44.9 28.2 612.7 S 37.9 S 25.8 24.4 67.9
Water S 27.6 S S 35.8 S 37.6 35.8 10.4 42.7 38.5 95.0
Air (including truck and air) S 45.4 S S S S S S S S 17.2 S
Pipeline – – – – – – S S S S S S
Multiple modes S 40.1 S 46.0 S S S S S 28.7 15.2 31.0
Parcel, USPS or courier S S S S S S S S S 28.0 19.6 27.9
Truck and rail S S S S S S S 40.0 S 31.6 21.3 49.4
Other multiple modes S S S S S S S S S 25.8 23.6 77.6
Other and unknown modes S 28.0 S 47.7 35.8 2.3 S 43.3 S S S 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 17.3 8.1 19.1 21.4 8.7 24.4 30.0 11.7 31.7 29.6 11.6 50.2
Single modes 18.1 8.3 20.0 22.0 8.9 25.5 30.5 12.0 33.6 29.8 15.6 59.3
Truck 18.5 8.7 20.4 17.6 8.4 19.3 25.3 9.0 25.0 30.8 17.3 62.6
Rail S 26.7 S S 30.6 S S 28.9 S 27.9 13.5 18.6
Water S 48.5 S S 41.5 S S S S 28.2 22.9 43.0
Air (including truck and air) S S S S S S S S S 28.9 29.8 55.3
Pipeline – – – – – – S S S S S S
Multiple modes 38.6 27.1 25.9 19.3 29.0 12.3 21.6 30.1 13.9 20.6 44.4 88.1
Parcel, USPS or courier S S S 49.1 46.2 28.0 S S S 22.5 49.5 107.6
Truck and rail 46.6 S S 43.1 S S 43.5 S S 21.2 29.3 49.3
Other multiple modes 48.3 29.9 7.5 34.9 34.9 12.3 34.3 34.8 12.2 22.5 13.3 30.7
Other and unknown modes S 22.6 S S 23.8 S 49.4 25.8 7.7 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 38.5 31.5 138.4 S 25.6 S 48.4 25.1 217.7 S 18.3 S
Single modes 39.2 31.8 133.7 S 25.7 S S 25.9 S S 17.3 S
Truck 41.0 32.8 137.5 S 27.8 S S 24.2 S S 17.5 S
Rail 42.4 44.8 60.0 36.6 42.7 17.8 41.1 44.7 15.9 30.0 26.6 22.5
Water S S S S S S S S S 27.9 25.9 112.9
Air (including truck and air) – – – – – – – – – – – –
Pipeline – – – – – – S S S S S S
Multiple modes S 49.2 S S S S S S S 34.7 31.1 58.9
Parcel, USPS or courier S S S S S S S S S 31.6 30.2 36.9
Truck and rail – S S – S S – S S – 31.6 –
Other multiple modes S S S S S S S S S 30.8 26.7 34.3
Other and unknown modes S 26.8 S 38.0 44.2 493.4 46.5 S S 31.8 S 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 14.5 15.4 30.7 14.4 16.4 30.3 17.2 28.8 28.6 48.4 39.5 66.0
Single modes 13.5 15.4 29.6 11.2 18.7 29.8 17.5 28.5 28.5 S 31.4 S
Truck 20.1 9.6 31.3 15.8 13.9 26.1 17.9 13.2 44.2 32.8 16.0 43.9
Rail 48.9 41.5 133.7 S 44.9 S S S S 25.5 30.0 28.0
Water 46.4 32.6 37.8 41.6 34.1 24.7 S 38.5 S 37.3 36.8 20.7
Air (including truck and air) – S S – S S – S S – 29.9 –
Pipeline 9.0 37.7 66.9 11.7 38.8 71.7 S S S S S S
Multiple modes S 42.5 S S 48.2 S S S S 33.0 38.6 2.1
Parcel, USPS or courier S 42.5 S S 48.2 S S S S 31.6 38.6 2.0
Truck and rail S – S S – S S – S 31.6 – –
Other multiple modes – – – – – – – – – – – –
Other and unknown modes S 33.1 S S 45.9 S 43.6 S S S 47.9 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 12.8 8.2 12.3 35.9 12.3 20.3 21.6 18.0 6.7 27.7 17.0 84.9
Single modes 24.4 8.4 16.4 36.8 12.4 20.7 19.5 18.8 5.8 35.4 18.9 91.1
Truck 25.0 8.2 18.8 42.1 12.6 30.6 28.0 9.9 17.3 32.0 14.9 18.4
Rail 24.5 12.3 4.9 32.9 31.0 9.4 35.3 24.2 5.6 34.5 13.3 20.8
Water – S S – S S – S S – 20.6 –
Air (including truck and air) 39.9 S S S S S S S S 15.9 3.9 22.2
Pipeline – 42.5 – – 43.7 – S S S S S S
Multiple modes 32.6 21.2 65.3 48.9 24.1 47.6 S 32.6 S 24.3 22.1 79.4
Parcel, USPS or courier 32.9 23.0 71.7 S 33.4 S S 24.4 S 24.5 22.9 82.6
Truck and rail 43.5 41.1 21.4 42.3 41.1 33.8 44.8 40.7 29.5 26.3 15.2 25.4
Other multiple modes S 30.6 S S 49.8 S S S S 28.7 10.9 42.8
Other and unknown modes 38.9 30.7 15.3 S S S S S S 43.4 44.1 110.5

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 7.9 7.7 10.5 17.3 9.0 23.5 22.9 11.0 29.9 18.7 10.4 19.0
Single modes 8.7 8.9 11.9 17.8 11.5 27.3 25.4 8.8 37.6 29.2 14.8 25.7
Truck 9.8 11.0 14.3 14.7 8.9 20.9 14.3 9.3 20.9 33.1 18.8 28.9
Rail 10.2 10.7 12.4 33.2 33.6 61.9 35.7 16.6 60.8 9.8 11.7 19.4
Water S 33.2 S S 39.0 S S S S 28.0 14.5 22.3
Air (including truck and air) 44.8 22.7 20.7 S 48.1 S S S S 15.0 8.0 23.9
Pipeline – – – – – – S S S S S S
Multiple modes 20.3 13.1 22.0 37.3 28.8 22.5 42.6 21.6 34.2 13.0 10.5 14.7
Parcel, USPS or courier 25.6 13.9 31.2 24.5 20.9 23.7 23.4 28.3 18.0 13.1 10.6 14.8
Truck and rail 33.0 22.1 18.8 26.3 34.2 13.3 24.2 26.0 15.6 5.3 11.4 14.2
Other multiple modes 36.7 36.3 44.5 S 34.1 S S 32.3 S 8.2 9.6 15.8
Other and unknown modes 23.7 21.3 32.1 39.4 46.4 58.4 33.9 S S S 30.2 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 22.5 4.0 21.9 21.4 10.3 8.1 18.8 9.4 12.4 19.0 20.9 28.3
Single modes 25.5 6.0 25.7 22.6 10.7 8.4 21.8 8.9 13.9 17.0 16.6 25.2
Truck 26.4 7.7 29.8 23.8 12.9 9.5 11.2 11.6 14.8 17.5 17.7 25.8
Rail S 13.6 S S 24.4 S S 17.3 S 26.8 16.0 39.0
Water S 33.6 S S 28.6 S S 43.4 S 28.0 15.4 28.7
Air (including truck and air) 39.2 27.5 27.4 S 31.2 S S 30.8 S 13.1 4.6 13.9
Pipeline – – – – – – S S S S S S
Multiple modes 31.0 18.0 28.1 23.5 20.6 12.1 34.2 27.6 19.7 21.2 19.8 24.0
Pa