From: Modelling spiral grain angle variation in New Zealand-grown radiata pine
Model
AIC
Log-likelihood
Fit indices (R2)
Fixed
Site
Tree
Disc
Eq. (1)
147338
−73661
0.26
0.31
0.51
0.61
Eq. (2)
149165
−74575
0.22
0.28
0.48
Eq. (3)
148444
−74213
0.24
0.43