Estimate

Std. error

t value

p-value

Intercept

89.486

0.36

248.78

0.000

Log decks

−13.955

0.512

−27.256

0.000

Primary roads

−10.762

0.565

−19.064

0.000

Secondary roads

−3.403

0.416

−8.18

0.000

Tree fall gaps

−3.784

0.486

−7.791

0.000

Skid trails

−1.481

0.547

−2.705

0.007