(1)

(2)

(3)

(4)

dig

−0.068^***

−0.055^***

−0.066^***

−0.079^***

(−13.199)

(−7.176)

(−9.448)

(−4.593)

dig²

0.022^***

0.016^**

0.018^***

0.044^***

(3.930)

(2.212)

(2.807)

(2.752)

egro

0.001^***

0.001^***

0.001^***

(2.860)

(3.083)

(3.857)

mar

−0.000

0.001

0.001^**

(−0.079)

(0.967)

(2.165)

gov

0.067^***

0.040^***

0.032^**

(4.781)

(2.916)

(2.314)

is

−0.003

0.026^*

0.031^*

(−0.181)

(1.856)

(1.824)

cul

0.010^***

0.018^***

0.021^***

(2.688)

(5.336)

(5.811)

road

−0.001^***

−0.002^***

−0.001^***

(−7.337)

(−8.305)

(−7.673)

labor

0.001^***

0.000^**

0.001^***

(4.156)

(2.152)

(2.787)

_cons

0.109^***

0.002

0.001

−0.033

(18.742)

(0.065)

(0.018)

(−1.173)

province

no

no

yes

yes

year

no

no

no

yes

N

330.000

300.000

300.000

300.000

R²

0.834

0.902

0.910

0.924

F

217.58

786.74

261.960

160.943