Response

Component

Parameter

Coefficient

s.e.

d.f.

t

Pr > |t|

Taper Rate

Fixed effects

Intercept (β0)

1.6674

0.09841

11

16.94

<0.0001

lnMPC (β1)

0.2889

0.02513

2136

11.50

<0.0001

lnLFL (β2)

−0.0762

0.01769

2136

−4.31

<0.0001

No. groups

Estimate

s.e.

Random effect

Tree

12

0.02053

0.01315

Residual

0.7133

0.02184

Model

n = 2151

Response

Component

Parameter

Coefficient

s.e.

d.f.

t

Pr > |t|

Length

Non-linear

Intercept (β0)

138.2

8.3960

1

15.12

<0.0001

LFL (β1)

0.1332

0.0253

1

27.27

<0.0001

CF (β2)

0.0057

0.0007

198

7.40

<0.0001

Model

n = 203