Douglas-fir:

Parameter

Estimate

S.E.

t-statistic

56.96

21.54

2.64

0.72

0.09

7.68

Durbin-Watson=1.94

No. of observations = 55

Lodge pole pine:

15.35

5.99

2.56

0.72

0.11

5.95

Durbin-Watson=2.18

No. of observations = 46