Table 4 OLS estimation of soybean traffic using monthly- transformed data

Constant

5887857^a (1536408)

4145769^a (745,464.4)

4421513^a (1042541)

17.15576^a (3.300358)

13.42014^b (5.199399)

Tollrate

− 244,005.6^b (106,630.3)

− 157,160.1^a (58,077.16)

−104,081.6 (88,316.8)

−0.812613^a (0.229335)

− 0.681838^a (0.185108)

Seasonality

790,500.4^a (116,500.1)

785,348.9^a (104,969.6)

592,911.9^a (77,210.10)

1.079006^a (0.107222)

0.538028^a (0.089732)

Soybeanbasis

3284.590^c (1766,172)

4530.940^a (1550.152)

2777.432 (1794.398)

0.263091^a (0.085413)

0.265311^a (0.075072)

Gulfpnwspread

3714.292 (9480.765)

–

–

–

–

Spreadcargo

16.94435^a (1.904329)

16.49192^a (1.565453)

15.12522^a (1.467617)

0.5220436^a (0.060453)

0.402326^a (0.050482)

Avgdollarindex

−53,942.85^a (15,535.92)

−41,945.90^a (8409.316)

−47,349.49^a (12,088.5)

−2.123237^a (0.741618)

−1.032270^c (0.602624)

BDI

−54.30246 (40.93568)

–

–

–

–

Bunkerhouston

− 512.0802 (597.8654)

–

–

–

–

Brazileastasiamt

0.017885 (0.033225)

–

–

–

–

Observations

162

162

161

162

161

R²

0.756303

0.750016

0.632053

0.771424

0.664786

Adjusted R²

0.741874

0.742003

0.620183

0.763754

0.652983

Durbin Watson

1.021043

1.002577

1.716442

1.109859

1.688698

Akaike Info. Criterion

29.25369

29.22978

28.93424

1.524676

1.128118