RETENUE D'ARZAL À ARZAL, paramètre Nitrates
mg(NO3)/L
28/03/13
27
28/03/13
28
12/08/13
12
04/10/13
5.5
23/02/16
27.4
17/06/16
18.8
20/07/16
14.6
06/09/16
7.6
28/03/19
28
17/05/19
19
12/07/19
13
11/10/19
4.6
22/03/22
23
15/06/22
9.8
16/08/22
3.6
03/10/22
2.2