# # PH Titration data # Test xcrvfit with a0=6 a1=7 a2=8 a3=1 # 4.05 8.674 4.42 8.663 4.71 8.650 4.85 8.641 5.03 8.624 5.24 8.600 5.45 8.564 5.64 8.513 5.85 8.439 6.08 8.338 6.26 8.240 6.39 8.161 6.58 8.044 6.75 7.949 7.08 7.855 7.22 7.814 7.39 7.777 7.58 7.744 7.89 7.710 8.27 7.686