Table 1.

Parameter estimates for nonlinear regressions of fertilization data

	468 μatm	673 μatm	998 μatm
Best-fit values
Max % Fert	45.93	62.21	53.07
C	1.98	0.40	0.54
SE
Max % Fert	3.30	17.97	6.02
C	0.46	0.20	0.12
95% confidence interval
Max % Fert	39.25–52.62	25.39–99.01	40.86–65.28
C	1.06–2.90	−0.0003–0.80	0.30–0.78
Degrees of freedom	38	28	37
R2	0.40	0.56	0.84

Max % Fert is the asymptotic average maximum percentage of fertilization, and C is a rate coefficient that determines how quickly the maximum is attained.