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Table 1 Characteristics of the measured trees from datasets 1 and 2: diameter at breast height (dbh), double bark thickness at breast height (DBT1.3), the total tree height, and age. Dataset 1 is from Altherr et al. (1978)

From: Comparison of models for estimating bark thickness of Picea abies in southwest Germany: the role of tree, stand, and environmental factors

 

Dataset 1 (1970s)

Dataset 2 (2014–2016)

Mean

SD

Minimum

Maximum

Mean

SD

Minimum

Maximum

dbh (cm)

34.5

14.5

13.1

84.6

39.8

11.3

17.3

81.5

DBT1.3 (mm)

19.1

6.4

6.0

48.0

20.1

6.0

7.0

46.0

Tree height (m)

    

29.6

4.2

14.6

44.3

Age (a)

    

86.4

28.2

32

216

  1. SD standard deviation