Fig. 2From: Traceability and quality assessment of Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) logs: the TreeTrace_Douglas databaseCharacteristics of the four stands with respect to some log-level variables: log frequency (on the left) and mean air-dried density (on the right). Mean air-dried density of logs was obtained by weighting disc densities (see Section 2.3) by disc areas at both log endsBack to article page