E/VRHE FE H2 FE FA FE H2 FE FA FE H2 FE FA pH 3 pH 3 pH 2.5 pH 2.5 pH 2 pH 2 -1 87.9003 -- 99.17246 -- -- -- -1.1 86.42493 11.33784 98.49067 -- 96.08906 -- -1.2 39.51634 57.71299 90.5292 9.65478 92.91981 -- -1.3 10.52063 89.21435 50.28684 47.68891 93.14393 7.97013 -1.4 6.31884 92.85642 21.39838 79.44139 76.90986 23.52471 -1.5 22.37827 75.38393 13.41222 87.10558 51.88773 53.73776 -1.6 -- -- 23.31826 65.69614 51.42458 51.97821