Fig. 4
From: Xylogenesis of compression and opposite wood in mountain pine at a Mediterranean treeline
Boxplot comparing of number of cells counted at each DOY in both the forming opposite (OW, blue) and the compression wood (CW, red) of each individual (n = 8 individuals in each group). From top to bottom, the counted cells in the cambial (C), enlarging (E), the secondary wall thickening (W), and the mature zones (M) are indicated. Lines indicate loess smoothings with confidence interval (loess smoother span = 0.4)