Fig. 5From: Modelling the variation in wood density of New Zealand-grown Douglas-firPith-to-bark radial pattern of breast height density by ring. Fine lines show densities for individual stands. The solid line shows the density predicted by Model (3) for an average site (L = 0). The dashed lines for sites at the 5th and 95th percentiles (lower and upper lines, L = −104 and L = +104, respectively)Back to article page