TABLE 2.

Coefficients of linear regression b₀ and b₁ in equation 10, R² for this equation, and F-statistics of the linear regression identity to 1:1

Component	Parameter	Value for the indicated plota
		Plot 1	Plot 2	Plot 3	Plot 4
Cl−	b0	−0.050 ± 0.012		0.018 ± 0.011	−0.015 ± 0.013
	b1	0.995 ± 0.033		0.882 ± 0.030	0.910 ± 0.039
	R2	0.969		0.969	0.954
	F	11.15		6.12	4.69
OC	b0	0.007 ± 0.009	0.009 ± 0.004	0.015 ± 0.009	−0.022 ± 0.017
	b1	1.030 ± 0.025	0.978 ± 0.013	0.897 ± 0.024	0.871 ± 0.053
	R2	0.983	0.996	0.98	0.911
	F	2.97b	2.37b	6.94	5.10
P	b0	−0.076 ± 0.025	−0.012 ± 0.019	0.016 ± 0.026	0.011 ± 0.007
	b1	0.886 ± 0.066	0.875 ± 0.057	0.749 ± 0.069	0.983 ± 0.021
	R2	0.856	0.911	0.814	0.989
	F	12.00	3.38	6.23	1.33b

^aData are the estimates of the average value ± standard error.

^bNot significantly different from one at the 0.05 significance level.