-33- 



XCUB 



Real 



Description 



Board foot volume equation coefficients 



Cubic foot volume equation coefficients 



Sawlog bd.ft. volume of tree 



Bd.ft. merchantable top diameter 



Cub.ft. volume equation intercept 



Cub.ft. volume equation slope 



Cub.ft. merchantable top diameter 



Cubic ft. volume of tree 



Diameter at breast height 



Species group for volume equations 



Tree Height 



Implied DO loop index for data statements 



Species loop counter 



Forest type indicator 



Stump height 



Total cubic foot volume 



Intermediate step in bd.ft. volume 



calculation 

 Intermediate step in cub.ft. volume 



calculation 



Subroutine STRAT 



STRAT is called by INVENT if more than one stratum are being processed. 

 STRAT calculates combined strata statistics for sawlog cubic foot volumes, 

 sawlog board foot volumes and pulpwood cubic foot volumes. These statistics 

 include total volume over all strata along with their standard error and 

 effective degrees of freedom. STRAT also calculates the total acreage of 

 all the strata combined. 



STRAT has two entry points, STRAT and STRAT2. STRAT is used as an 

 entry point after each individual stratum is processed. Sums are accumulated 

 for volumes, variances, and squared variances. STRAT2 is called after all 

 of the strata have been processed. The previously accumulated sums are used 

 to calculate total volumes, standard errors, and effective degrees of freedom. 



Common Areas Used: OUTl and STOUT. 



Description 



Acreage of compartment 

 Diameter class size 

 Diameter at breast height 

 Intermediate calculation in EFDFBD 

 Intermediate calculation in EFDFCB 

 Intermediate calculation in EFDFPL 

 Species loop counter 

 Sawlog bd.ft. variance 

 Sawlog cub.ft. variance 

 Pulpwood cub . ft . variance 

 Implied DO loop index 

 Implied DO loop index 



