Table 3.

Cross-validation of the trunk model, the values present the coefficient of determination, i.e., the value for E. globulus Labill. the trees were located in Central Portugal where we used trees that had grown in V.F. Xira as calibration trees, see Table 2, and cross-validated on trees from Azambuja and Serta, which are regions similar to V.F. Xira.

Locations	Trunk models
	Trunk areas	Sapwood areas	Heartwood areas
Azambuja	0.98	0.93	0.98
Serta	0.96	0.68	0.99