depth	area	concentration
5	107	77
10	96.4	46
15	85.4	34
20	53.2	21
25	21.6	17
30	19.6	14
35	14.9	12
40	12.3	25
45	10.5	34
50	7.5	56
55	6.8	67
60	5.5	78