"HW"	"BOD"
8	2.5
6.2	4
9.2	4.1
6.4	6.2
8.6	7.1
12.2	7
7.2	8.3
12	9.2
14.9	9.3
12.1	12
15.3	12.2
14.8	12.6
14.3	14.2
16.3	14.4
17.9	15.1
19.5	15.2
17.5	16.3
14.3	17.1
18.3	17.9
16.2	17.9