Table 3.

Results from the linear regression model of DOC measured at 260 and 254 nm versus the mg C L ⁻¹ measured with the liquid TOC analyser

	DOC260 vs DOCTOC	DOC254 vs DOCTOC
	Best-fit values
Slope	0.9167	0.6493
Y-intercept	0.3925	−0.1072
1/slope	1.091	1.540
	95% Confidence Intervals
Slope	0.8735 to 0.9599	0.6092 to 0.6893
Y-intercept	0.0023 to 0.7827	−0.4689 to 0.2545
	Goodness of Fit
r2	0.9465	0.9118
Equation	Y = 0.9671*X + 0.2708	Y = 0.7133*X - 0.09960
n	102	102

*Fe and Zn deficient exudate samples were excluded from the regression model