Chemical	Strength
1	1.3
1	1.6
1	0.5
1	1.2
1	1.1
2	2.2
2	2.4
2	0.4
2	2
2	1.8
3	1.8
3	1.7
3	0.6
3	1.5
3	1.3
4	3.9
4	4.4
4	2
4	4.1
4	3.4