Driver 	Before 	After
1 	6.25 	6.85
2 	2.96 	4.78
3 	4.95 	5.57
4 	3.94 	4.01
5 	4.85 	5.91
6 	4.81 	5.34
7 	6.60 	6.09
8 	5.33 	5.84
9 	5.19 	4.19
10 	4.88 	5.75
11 	5.75 	6.25
12 	5.26 	7.23
13 	3.16 	4.55
14 	6.65 	6.42
15 	5.49 	5.25
16 	4.05 	5.59
17 	4.42 	3.96
18 	4.99 	5.93
19 	5.01 	6.03
20 	4.69 	3.72