c/(ug/L)	Measured
3.1	0.86
6.1	1.12
5.9	1.71
7.1	1.68
8.1	2.03
9.9	2.46
12.3	2.85
13	3.36
13.6	3.22
16	3.25
19.1	3.56
24.1	3.76
25.8	4.17
27.6	4.58
33.2	4.82
36.4	5.19