Table 2 GAMM fitting results. Both models were fitted using a Gaussian family and an identity link function
From: Single-tree crown shape and crown volume models for Pinus nigra J. F. Arnold in central Italy
| Â | GAMM coefficient | Estimate or edf for the smoothing term | Std. error | Ref. df | P value |
|---|---|---|---|---|---|
L0 fitting | Intercept | 4.08126 | 0.08203 | - |  < 2 e−16 |
s(l) | 5.5180 | - | 5.518 |  < 2 e−16 | |
rcb fitting | Intercept | 1.18454 | 0.05516 | - |  < 2 e−16 |
s(rmean) | 2.9710 | - | 3.717 |  < 2 e−16 |