Table 2. Maximum likelihood estimates (MLE) and 95% confidence limits for parameters in Model 3a.

		Amaxarea	Amaxmass	Rdarkarea	Rdarkmass
D	lower limit	0.325	−0.653	0.761	0.170
	MLE	0.554	−0.037	0.849	0.425
	upper limit	0.726	0.324	0.916	0.597
μ_birch	lower limit	13.52	1238.0	0.98	88.8
	MLE	16.00	1700.0	1.12	109.2
	upper limit	18.44	2157.7	1.26	129.7
μ_ash	lower limit	4.21	446.6	1.26	112.3
	MLE	6.27	693.8	1.55	147.7
	upper limit	8.97	1014.8	1.87	187.2
μ_maple	lower limit	2.82	335.2	0.56	53.1
	MLE	4.98	550.3	0.75	73.3
	upper limit	7.93	838.2	0.95	96.7
μ_pine	lower limit	5.00	282.2	0.59	24.7
	MLE	7.65	497.9	0.81	39.8
	upper limit	11.55	807.1	1.06	59.2
μ_hemlock	lower limit	4.18	303.8	0.71	40.6
	MLE	6.86	544.7	1.04	62.1
	upper limit	10.67	886.0	1.45	89.9

Units for per-area Amax and Rdark are µmol CO₂ m⁻² s⁻¹, and units for per-mass Amax and Rdark are 10⁻⁴ µmol CO₂ g⁻¹ s⁻¹.