	log(PO₄)		log(Fe³⁺)	log(H⁺)
0.00		−4.12	−8.53	−4.35
0.01	−7.65	−4.10	−8.13	−4.12
0.05	−7.57	−4.03	−8.04	−4.06
0.10	−5.30	−3.96	−7.80	−3.91
0.25	−4.71	−3.80	−7.74	−3.85
0.50	−4.35	−3.61	−7.65	−3.75
0.75	−4.17	−3.48	−7.70	−3.72
0.90	−4.09	−3.42	−7.62	−3.63
0.95	−4.06	−3.39	−7.60	−3.60
0.99	−3.50	−3.39	−7.82	−3.58
1.00	−3.45	−3.39	−7.88	−3.55