GRAND FIR HEIGHT PREDICTION 



(Equation II) 



Table 6a. — Base values f rom stand age and white pine site index 



Stand 



age 

 (years) 







White pine site index 







40 



50 



60 



70 



80 



20 



37 



46 



52 



57 



62 



30 



49 



59 



69 



77 



84 



40 



51 



63 



73 



81 



90 



50 



51 



62 



72 



80 



88 



60 



48 



59 



68 



76 



84 



70 



45 



55 



63 



71 



77 



80 



41 



51 



58 



64 



70 



90 



37 



45 



51 



57 



61 



100 



33 



40 



45 



49 



52 



Table 6b. — Grand fir adjustment values for white pine height and stand age 



White pine 

 height 









Stand age (years) 

























(feet) 



20 



30 



40 



50 60 



70 



80 



90 



100 



10 



-25 



-12 















20 



-50 



-24 



-12 













30 



-75 



-36 



-17 



-6 











40 





-49 



-23 



-8 +3 











50 





-61 



-29 



-10 +3 



+ 13 









60 







-34 



-11 +4 



+ 15 



+ 23 







70 







-40 



-13 +5 



+ 18 



+ 27 



+35 



+41 



80 









-15 +5 



+20 



+31 



+40 



+46 



90 









-17 +6 



+22 



+35 



+44 



+ 52 



100 









+7 



+ 25 



+39 



+49 



+58 



110 









+ 7 



+28 



+43 



+ 54 



+64 



120 











+30 



+46 



+ 59 



+ 70 



130 











+33 



+50 



+64 



+ 75 



140 













+ 54 



+69 



+81 



150 













+ 58 



+ 74 



+37 



160 















+ 79 



+ 93 



170 

















+99 



19 



