hrs min sec experiment 2 23 6 A 3 16 17 A 3 2 56 A 2 45 0 A 3 4 42 A 2 56 25 A 3 12 28 A 1 57 12 A 2 22 22 B 1 42 7 B 2 31 17 B 3 15 16 B 2 28 4 B 1 55 34 B 2 17 7 B 1 48 48 B