RAU DE GALOURAIS à HELLEAN, paramètre Nitrates
mg(NO3)/L
27/01/16
52
24/02/16
34
29/03/16
56
27/04/16
79
25/05/16
61
29/06/16
55
28/02/17
46
29/03/17
52
26/04/17
50
29/05/17
41
20/12/17
11
30/01/18
41
27/02/18
65
28/03/18
55
24/04/18
60
30/05/18
46
27/06/18
47
17/12/18
47