RAU VALMER A CHERRE, paramètre Nitrates
mg(NO3)/L
16/02/18
38
17/04/18
51
19/06/18
49
21/08/18
47
22/10/18
44
14/12/18
45
12/02/19
42
09/04/19
51
17/06/19
44
08/08/19
41
15/10/19
37
09/12/19
31