d_mean_age_bd

CODE DESCRIPTION FROM_YEAR TO_YEAR
1 0-20 years 1984  
2 21-40 years 1984  
3 41-60 years 1984  
4 61-80 years 1984  
5 81-100 years 1984  
6 101- 120 years 1984  
7 >120 years (corresponds to the yearly measured mean age of the crown condition survey) 1984  
8 Irregular stands 1984  
9 Unknown 1984