I 



Table 1— Comparison of volumes (expressed as percentages) computed from diameters measured at 1.3 m (metric diameter) 

 and 1.37 m (Englisfi diameter). Confidence limits (CL) are at tfie 95 percent level. 



Mean Mean Median Maximum Minimum 



Diameter Number diameter volume volume volume volume Lower CL Upper CL Lower CL Upper CL 

 class of trees difference difference^ difference difference difference t-test t-test chi-square chi-square 



Subalpine fir 



5-6.9 



34 



.02 



.7 



1.3 



5.6 



-6.8 



-.18 



1.59 



.58 



.90* 



7-8.9 



33 



.06 



1.5 



1.0 



7.1 



-3.1 



.68 



2.37* 



1.39 



1.74* 



9-10.9 



29 



.01 



.3 



.7 



6.6 



-11.0 



-.69 



1.35 



.18 



.57* 



11-12.9 



21 



.10 



1.5 



.6 



8.8 



-.7 



.37 



2.56* 



1.27 



1.83* 



13-14.9 



12 



.07 



1.0 



.5 



6.3 



-1.0 



-.36 



2.27 



.70 



1.55* 



15-16.9 



8 



.16 



1.9 



.9 



4.6 



.0 



.31 



3.42* 



1.44 



3.08* 



17-18.9 



3 



.12 



1.2 



.8 



2.0 



.8 



-.63 



3.02 



.70 



4.32* 



19-20.9 



1 



.24 



2.2 



2.2 



2.2 



2.2 







.25 



7.79* 



21-22.9 



1 



-.12 



-1.0 



-1.0 



-1.0 



-1.0 







-1.89 



1.62 



23-24.9 



1 



.16 



1.2 



1.2 



1.2 



1.2 







.14 



4.24* 



Total 



143 



.05 



1.0 









.63 



1.42* 



.99 



1.07* 



Lodgepole pine 



5-6.9 



153 



.03 



1.4 







16.6 



-24 



.66 



2.09* 



1.32 



1.44* 



7-8.9 



219 



.03 



.9 



1.0 



12.5 



-17 



.47 



1.25* 



.83 



.89* 



9-10.9 



254 



.05 



1.1 



.8 



14.5 



-5.4 



.80 



1.34* 



1.05 



1.09* 



11-12.9 



155 



.07 



1.1 



.7 



9.7 



-6.0 



.73 



1.46* 



1.06 



1.13* 



13-14.9 



118 



.07 



1.0 



.5 



9.1 



-6.4 



.56 



1.37* 



.93 



.1.01* 



15-16.9 



44 



.06 



.7 



.7 



8.5 



-6.4 



.11 



1.37* 



.66 



.87* 



17-18.9 



19 



.07 



.8 



.4 



7.4 



-1.7 



-.12 



1.69 



.63 



1.08* 



19-20.9 



6 



.07 



.7 



.6 



1.5 







-.12 . 



1.52 



1.49 



1.44* 



Total 



968 



.05 



1.0 









.86 



1.22* 



1.03 



1.05* 



Englemann spruce 



5-6.9 



23 



.05 



2.0 



1.7 



22.2 



-35 



-2.35 



6.45 



1.37 



3.26* 



7-8.9 



32 



.05 



1.6 



1.1 



9.4 



-3.9 - 



.46 



2.68* 



1.40 



1.85* 



9-10.9 



28 



.08 



1.4 



1.3 



5.8 



-3.3 



.87 



1.96* 



1.33 



1.54* 



11-12.9 



44 



.08 



1.4 



1.3 



5.8 



-3.3 



.87 



1.96* 



1.33 



1.54* 



13-14.9 



29 



.11 



1.6 



1.1 



7.8 



-.6 



.87 



2.26* 



1.43 



1.78* 



15-16.9 



42 



.08 



1.0 



1.0 



4.5 



-3.5 



.49 



1.56* 



.95 



1.15* 



17-18.9 



24 



.11 



1.1 



1.4 



3.7 



-.9 



.69 



1.61* 



1.05 



1.33* 



19-20.9 



19 



.14 



i.2 



1.0 



3.2 







.75 



1.58* 



1.05 



1.38* 



21-22.9 



5 



.11 



.9 



.6 



2.6 



-0.3 



-.48 



2.28 



■ .57 



2.22* 



23-24.9 



3 



.25 



1.8 



2.0 



2.7 



.8 



-.45 



4.11 



1.10 



6.44* 



25-26.9 



5 



.28 



2.0 



1.9 



3.1 



1.3 



1.16 



2.84* 



1.49 



4.07* 



27-28.9 



2 



.18 



1.1 



1.1 



1.8 



.5 



-7.12 



9.42 



.47 



5.38* 



>29 



4 



.13 



.8 



.6 



2.0 







-.74 



2.34 



.46 



2.48* 



Total 



260 



.09 



1.4 









.99 



1.86* 



1.40 



1.46* 



Cottonwood 



5-6.9 



3 



-.04 



-1.4 



-2.4 



4.2 



-5.9 



-14.2 



11.43 



-3.00 



8.96 



7-8.9 



3 



.05 



1.6 







4.9 , 







-5.38 



8.64 



.58 



8.22* 



9-10.9 



2 



-.04 



-.9 



-.9 



-.8 



-.9 



-1.76 



.01 



-1.32 



1.94 



11-12.9 



12 



.05 



.8 



1.4 



5.9 



-4.0 



-.85 



2.47 



.50 



1.52* 



13-14.9 



8 



.22 



3.3 



2.5 



8.9 



-2.3 



-.08 



6.59 



2.44 



5.61* 



15-16.9 



3 



.10 



1.4 



1.6 



2.6 







-1.88 



4.69 



.75 



5.55* 



17-18.9 



5 



.10 



1.1 



1.3 



3.5 



-.5 



-.94 



3.17 



.66 



2.94* 



19-20.9 



7 



.08 



.8 



1.3 



2.1 



1.2 



-.31 



1.97 



.57 



1.65* 



21-22.9 



1 



.08 



.7 



.7 



.7 



.7 







.09 



2.65* 



23-24.9 



1 



.04 



.3 



.3 



.3 



.3 







.04 



1.22* 



25-26.9 



1 



-.28 



-2.2 



-2.2 



-2.2 



-2.2 







-4.06 



3.47 



Total 



46 



.08 



1.1 









.24 



1.91* 



.97 



1.23* 



3 



