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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 19.2 13.2 29.3 15.0 13.7 32.7 15.8 16.9 36.8 12.5 7.1 18.4
Single modes 22.4 16.0 34.3 15.0 13.9 32.5 16.4 17.3 37.6 10.7 17.0 15.2
Truck 21.0 13.1 33.8 17.3 14.7 34.8 11.2 13.6 24.7 12.3 16.5 17.3
Rail 44.8 48.0 127.1 41.2 S S 45.8 S S 36.6 28.9 29.0
Water – – – – – – – – – – – –
Air (including truck and air) S 36.1 S 37.9 46.7 12.6 S S S 4.7 9.2 12.2
Pipeline – – – – – – S S S S S S
Multiple modes 9.8 12.7 20.3 S 23.9 S 30.9 19.6 68.8 4.2 4.5 7.3
Parcel, USPS or courier 9.8 13.3 21.4 30.7 15.0 85.9 34.7 16.1 128.8 4.2 4.5 7.4
Truck and rail 38.3 36.4 20.5 S 47.7 S S 38.2 S S S S
Other multiple modes S S S S S S S S S 33.2 31.9 22.3
Other and unknown modes 32.9 22.7 59.2 47.9 38.1 107.1 47.9 40.5 109.2 33.0 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 27.4 20.3 24.4 34.4 23.1 24.9 39.3 28.4 11.8 S 27.2 S
Single modes 27.4 20.5 26.0 34.4 23.8 25.8 39.3 28.8 12.1 S S S
Truck 27.4 21.7 27.3 34.4 24.0 25.9 39.3 30.6 12.9 S S S
Rail – – – – – – – – – – – –
Water – – – – – – – – – – – –
Air (including truck and air) – S S – S S – S S – 29.9 –
Pipeline – – – – – – S S S S S S
Multiple modes S S S S S S S 47.0 S 31.0 29.7 44.9
Parcel, USPS or courier S S S S S S S S S 31.0 30.7 45.5
Truck and rail – S S – S S – S S – 29.5 –
Other multiple modes – – – – – – – – – – – –
Other and unknown modes – S S – S S – S S – 28.3 –

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 10.4 19.8 46.8 17.0 45.4 209.3 17.0 30.3 126.1 15.4 26.1 72.2
Single modes 10.7 19.9 47.9 17.9 46.7 209.9 17.0 32.6 122.7 15.0 31.8 49.1
Truck 10.7 19.9 48.0 17.9 46.7 210.1 16.9 32.7 123.5 14.9 28.1 47.6
Rail S – S S – S S – S 31.6 – –
Water – – – – – – – – – – – –
Air (including truck and air) S S S S S S 47.7 S S 28.3 28.3 19.6
Pipeline – – – – – – S S S S S S
Multiple modes 18.0 49.4 80.5 48.1 35.0 355.7 49.5 44.7 445.0 8.3 23.6 52.7
Parcel, USPS or courier 18.0 S S 47.9 47.6 563.6 49.5 S S 8.3 23.6 53.2
Truck and rail – S S – S S – S S – 29.8 –
Other multiple modes S S S S S S S S S 31.6 31.6 2.9
Other and unknown modes 45.5 S S S S 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 27.4 28.2 72.4 28.9 47.5 122.6 33.9 49.7 171.5 S S S
Single modes 27.7 27.9 73.4 28.7 47.7 120.6 35.2 50.0 170.3 S S S
Truck 20.6 25.4 45.6 37.1 S S 25.9 41.0 124.5 S S S
Rail 47.0 S S 41.4 S S 46.7 S S 26.1 26.3 27.3
Water – – – – – – – – – – – –
Air (including truck and air) – – – – – – – – – – – –
Pipeline – – – – – – S S S S S S
Multiple modes S S S S S S S S S 30.9 33.1 40.5
Parcel, USPS or courier S S S S S S S S S 44.8 33.1 24.8
Truck and rail S – S S – S S – S 31.6 – –
Other multiple modes – – – – – – – – – – – –
Other and unknown modes S S S S S S S S S S 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 25.0 30.9 48.5 38.7 30.1 68.4 26.7 29.8 47.4 S 15.2 S
Single modes 25.2 30.6 48.7 38.7 29.8 68.6 26.8 29.4 47.8 5.5 11.2 14.5
Truck 25.2 30.6 48.7 38.7 29.8 68.6 26.8 29.4 47.8 5.5 11.2 14.5
Rail – – – – – – – – – – – –
Water – – – – – – – – – – – –
Air (including truck and air) – – – – – – – – – – – –
Pipeline – – – – – – S S S S S S
Multiple modes S S S S S S S S S 32.0 31.6 S
Parcel, USPS or courier S S S S S S S S S 32.0 31.6 S
Truck and rail – – – – – – – – – – – –
Other multiple modes – – – – – – – – – – – –
Other and unknown modes S S S S S S S S S 41.8 46.7 40.3

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 15.0 16.5 21.3 26.9 47.3 43.9 21.4 32.6 60.9 24.8 38.8 113.9
Single modes 18.1 17.3 23.7 27.9 47.9 44.1 22.3 35.0 63.8 S 43.1 S
Truck 18.3 17.4 23.9 27.9 47.9 44.1 22.2 35.0 63.9 S 44.9 S
Rail – – – – – – – – – – – –
Water – – – – – – – – – – – –
Air (including truck and air) S 44.0 S 48.7 49.8 21.3 45.4 42.2 36.8 20.0 25.3 66.1
Pipeline – – – – – – S S S S S S
Multiple modes 25.0 25.3 48.9 48.0 32.6 80.6 28.3 27.7 57.5 13.3 12.1 22.2
Parcel, USPS or courier 25.2 25.3 48.7 46.3 32.6 75.8 30.2 27.7 52.1 13.3 12.1 22.3
Truck and rail S – S S – S S – S 31.6 – –
Other multiple modes – – – – – – – – – – – –
Other and unknown modes 47.9 37.9 13.5 S 48.3 S S S S 27.4 46.6 25.4

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 8.6 17.4 15.4 18.9 23.6 23.9 29.0 28.5 28.5 9.5 15.4 37.9
Single modes 9.3 19.0 14.9 19.2 23.5 23.7 30.8 28.7 30.2 14.0 18.5 27.4
Truck 9.3 19.6 15.4 19.4 24.0 24.2 31.5 31.7 33.7 14.3 17.8 24.3
Rail S S S S S S S S S 26.6 25.9 19.9
Water – – – – – – – – – – – –
Air (including truck and air) S 45.9 S 45.0 46.2 28.8 47.3 42.4 49.6 17.2 27.5 53.0
Pipeline – – – – – – S S S S S S
Multiple modes 23.9 25.7 48.6 19.1 37.4 27.5 22.5 41.7 21.8 6.8 14.7 23.3
Parcel, USPS or courier 24.5 28.6 55.6 26.9 26.0 47.3 31.7 22.0 66.5 6.8 14.8 23.5
Truck and rail 40.9 S S 41.5 45.9 28.6 41.0 46.0 16.9 25.7 23.6 29.6
Other multiple modes – S S – S S – S S – 31.6 –
Other and unknown modes 36.9 S S S 50.0 S 38.0 S S 39.5 S 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 13.0 11.7 14.1 41.9 20.9 95.4 34.1 13.2 43.4 17.8 17.5 31.0
Single modes 19.9 15.2 20.8 42.2 21.4 104.3 36.9 14.9 58.2 S 21.4 S
Truck 18.5 15.1 19.4 42.2 21.4 104.5 37.1 15.3 64.4 S 14.7 S
Rail S – S S – S S – S 31.6 – –
Water – – – – – – – – – – – –
Air (including truck and air) S 36.6 S 30.9 S S 26.6 S S 15.9 20.6 23.6
Pipeline – – – – – – S S S S S S
Multiple modes 15.6 24.3 21.8