Acid Method
14.29 A
19.10 A
19.09 A
16.25 A
15.09 A
16.61 A 
19.63 A
20.06 B
20.64 B
18 B
19.56 B
19.47 B
19.07 B
18.38 B
20.04 C
26.23 C
22.74 C
24.04 C
23.37 C
25.02 C
23.27 C