From: Predicting stand age in managed forests using National Forest Inventory field data and airborne laser scanning
Mean
Standard deviation
Minimum
Maximum
Degree days (C)
1058
173.9
707
1344
Elevation (m)
141
70.1
1
306
Basal area (m2·ha−1)
16.4
8.5
0
49
Mean height (m)
13.1
5.7
2
30.9
Mean diameter (cm)
14.9
7.7
41
Stand age (years)
44.7
21.6
10
100