TV010

Attribute: DBH_CODE

code		description
1		DBH estimated by linear interpolation or extrapolation
2		DBH estimated from growth rates of nearby trees of similar size
3		DBH estimated assuming 'no growth' (usually missing, non-vigorous, or damaged trees)
4		DBH estimated for individual boles using basal area of joint dbh of grown together (fused) trees
5		DBH estimated for individual boles using USFS Forest Inventory and Analysis (FIA) method for Independent trees that grow together
8		DBH is measured using a non-standard field procedure or estimated in the field
9		DBH estimated, method unknown or unspecified
A		DBH needs adjustment based on comments
G		Good: normally measured DBH
M		Missing: no measurement taken for missing or dead (mortality) trees
U		Unknown: DBH is missing for a tree not listed as missing or dead
V		Verified: diameter is double checked in the field