TABLE 2.

Parameters from global fits to model II

	Argon				Oxygen				NiEDDA
Residue*†‡	A11	We1	A12	We2	A21	kex21	A22	kex22	A31	kex31	A32	kex32	χ2§
128	90	0.235	11	0.235	11	0.0	70	2.19	25	0.0	66	0.265	1.66
129	58	0.065	40	0.155	62	0.21	30	0.289	80	0.01	17	0.108	1.03
130	4	0.21	97	0.21	1	0	96	1.58	14	0	85	0.14	2.00
131	1	0.25	99	0.25	8	0.00	94	1.96	7	0.0	93	0.19	1.57
132	8	0.16	92	0.27	41	3.21	57	1.23	5	0.0	83	0.25	1.58
133	41	0.095	58	0.05	90	0.00	7	0.635	5	0.025	94	0.002	1.25
134	52	0.105	45	0.165	2	0.135	74	1.61	8	0.00	85	0.132	2.11
135	48	0.16	47	0.31	28	0.00	57	1.69	25	0.00	46	0.3	1.61

^*W_e1 and W_e2 are in MHz; k_ex is in MHz/mM.

^†The specific exchange rate constants (k_ex) are obtained by dividing W_ex values from fitting by the concentration of exchange reagent; 3 mM for NiEDDA and 0.26 mM for O₂ in equilibrium with air (38).

^‡Standard deviation from global fits is <0.1% and 1% for W_e and W_ex, respectively.

^§From global fits.