"Subject:","Before:","After:","Difference:"
1,81,78,3
2,87,91,-4
3,86,78,8
4,82,78,4
5,90,84,6
6,86,67,19
7,96,92,4
8,73,70,3
9,74,58,16
10,75,62,13
11,72,70,2
12,80,58,22
13,66,66,0
14,72,60,12
15,56,65,-9
16,82,73,9