depth,n2,chla,zone
0,14.20454545,0.077068666,2
0.5,14.10965215,,2
1,13.96488828,0.071730658,2
1.5,15.66095628,,2
2,17.14725644,0.041205549,2
2.5,17.68697661,,2
3,16.52279471,0.024924433,2
3.5,16.42972103,,1
4,17.03281424,0.022526968,1
4.5,14.85929161,,1
5,14.43554089,0.021574423,1
6,10.25104603,0.019369947,1
7,10.93359514,0.019463549,1
8,20.72056834,0.024209707,1
9,21.36379491,0.022511455,1
10,13.87001812,0.021020609,1
12,,0.022261454,
14,,0.02393074,
16,,0.015475764,
18,,0.01559807,