Variable:TreeAgeTot

Name:	TreeAgeTot
Description:	"Actual" tree age since seed germinated. Not measured, but computed as TreeAgeBH + time to reach breastheight (T). T is obtained from a function or lookup table
I/O:	Input (current state) and output variable (prognosis)
Membership:	Tree
Type:	real
Unit/values:	(yrs)
Database table:	dbo.Trees