Exports Table B–4c,,,,,,,
"Estimated Standard Error of Percentage for Export Shipment Characteristics by Export Mode and Country of Destination: Percent of Total for 2002 and 1997
",,,,,,,
"[Estimates are shown as percents and are based on data from the 2002 and 1997 Commodity Flow Surveys]
",,,,,,,
Country of destination,Export mode of transportation,Value,,Tons,,,
,, Std. error of percent 2002 , Std. error of percent 1997 , Std. error of percent 2002 , Std. error of percent 1997 ,,
Total,All modes,—,—,—,—,,
Canada,All modes,—,—,—,—,,
Canada,Single modes,1.1,1.4,1.9,0.5,,
Canada,Truck,2.0,1.3,3.0,3.1,,
Canada,Rail,1.1,2.4,4.1,2.7,,
Canada,Water,0.2,0.4,3.5,3.9,,
Canada,Air (including truck and air),1.0,1.2,—,—,,
Canada,Pipeline,S,S,S,S,,
Canada,Multiple modes,1.1,0.3,1.9,—,,
Canada,"Parcel, U.S.P.S. or courier",1.0,0.3,—,—,,
Canada,Truck and rail,—,—,—,—,,
Canada,Other multiple modes,0.8,—,1.9,—
Canada,Other and unknown modes,0.6,1.3,1.0,0.5
Mexico,All modes,—,—,—,—
Mexico,Single modes,7.5,4.9,1.2,2.0
Mexico,Truck,7.0,6.1,5.2,6.5
Mexico,Rail,0.9,S,4.8,7.3
Mexico,Water,2.4,S,7.4,S
Mexico,Air (including truck and air),1.3,1.0,—,—
Mexico,Pipeline,S,S,S,S
Mexico,Multiple modes,S,0.6,1.0,—
Mexico,"Parcel, U.S.P.S. or courier",0.5,0.6,S,—
Mexico,Truck and rail,—,—,—,—
Mexico,Other multiple modes,S,—,1.0,—
Mexico,Other and unknown modes,0.8,4.8,0.3,1.9
All Other,All modes,—,—,—,—
All Other,Single modes,0.8,1.1,1.1,2.2
All Other,Truck,1.9,0.2,0.1,0.2,,,
All Other,Rail,—,—,1.1,0.1,,,
All Other,Water,1.4,2.4,1.9,2.3,,,
All Other,Air (including truck and air),2.1,2.9,0.3,0.2,,,
All Other,Pipeline,S,—,S,—,,,
All Other,Multiple modes,0.7,0.3,1.2,0.1,,,
All Other,"Parcel, U.S.P.S. or courier",0.6,0.3,—,0.1,,,
All Other,Truck and rail,—,—,—,—,,,
All Other,Other multiple modes,0.4,—,1.2,—,,,
All Other,Other and unknown modes,0.4,0.9,0.6,2.2,,,
"
KEY: 
— Represents an estimate equal to zero or less than 1 unit of measure.
S Estimate does not meet publication standards because of high 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:  Research and Innovative Technologies Administration, Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, Export Data, March 2005.",,,,,,,,