Ship

Ship

Intercept

−2.594^c

−4.909^c

−6.368^c

−2.516^c

−4.621^c

−5.939^c

(Std. Error)

(0.140)

(1.169)

(1.238)

(0.104)

(0.853)

(0.870)

Border

−0.180

−0.470^b

−0.162

−0.424^c

(Std. Error)

(0.164)

(0.179)

(0.121)

(0.126)

Distance

0.254^a

0.463^c

0.231^b

0.420^b

(Std. Error)

(0.136)

(0.151)

(0.099)

(0.106)

0.004

0.046

0.145

0.015

0.079

0.235

As Crow Flies

As Crow Flies

Intercept

−2.594^b

−3.436^c

−6.876^c

−2.516^c

−3.189^c

−6.125^c

(Std. Error)

(0.140)

(0.879)

(1.265)

(0.104)

(0.901)

Border

−0.180

−0.934^c

−0.162

−0.792^c

(Std. Error)

(0.164)

(0.267)

(0.121)

(0.190)

Distance

0.084

0.574

0.066

0.484^c

(Std. Error)

(0.104)

(0.169)

(0.077)

(0.120)

0.004

−0.007

0.175

0.015

−0.005

0.241

By Highway for US Ports

By Highway for US Ports

Intercept

−2.594^b

−3.578^c

−6.718^c

−2.516^c

−0.774^c

−6.056^c

(Std. Error)

(0140)

(0.945)

(1.289)

(0.104)

(0.114)

(0.917)

Border

−0.180

−0.819^c

−0.162

−0.710^c

(Std. Error)

(0.164)

(0.249)

(0.121)

(0.177)

Distance

0.101

0.543^c

0.083

0.466^c

(Std. Error)

(0.111)

(0.169)

(0.083)

(0.120)

0.004

−0.004

0.158

0.015

−0.000

0.228