d_decay

CODE DESCRIPTION FROM_YEAR TO_YEAR
1 No evidence of decay. 1984  
2 Solid wood. Less than 10% changed structure due to decomposition. The wood is solid at its surface. The wood is attacked only to a very small degree by wood decomposing organisms. 1984  
3 Slightly decayed. 10-25% of the wood has a changed structure due to decomposition. This can be assessed by sticking the wood with a harp object. 1984  
4 Decomposed wood 26-75% of the wood is soft to very soft. 1984  
5 Very decomposed wood. 76% - 100 % of the wood is soft 1984