-30- 



attempting to calculate variances, GUTS checks to see if more than one plot 

 has been sampled. If not, GUTS sets itself into summary mode and does not 

 attempt to calculate any variances or standard errors. 



Common Areas Used: COMUNE, REG, and OUTl. 

 Other 



Description 



Board foot volume of a tree 



Sawlog bd.ft. volume of a sample unit 



Sum of BRDPT^ 



Sawlog cub.ft. volume of a sample unit 



Sum of CUBPt2 



Cubic foot volume of a tree 



Diameter at breast height 



Sample method expansion factor 



Tree height 



DO loop index 



Number of reps on input 



Species loop counter 



First of a forest type 



Last of a forest type 



Loop counter 



Number of plots sampled 



Percent cruise 



Percent sawlog 



Fixed radius plot size 



Point number 



Product code 



Pulpwood cub.ft, volume of a sample unit 



Sum of PULPt2 



Pulpwood cub.ft. volume of a tree 



Weight for regression standard error 



Species input code 



Number of trees tallied by d.b.h. 



Number of trees on a sample unit 



Sawlog cub.ft. volume variance 



Subroutine VOLMER 



VOLMER is called by GUTS to calculate the merchantable cubic and board 

 foot volume of individual trees when tree height is specified to a merchant- 

 able top. The input parameters are d.b.h., merchantable height, and species. 



The cubic foot volume equations are from Barnard et al. (1969). To 

 use these equations all species must be placed in one of seventeen groups. 

 The species grouping is as follows: 



