RUISSEAU DE VAU JOLY A SAINT-MALO-DU-BOIS, paramètre Nitrates
mg(NO3)/L
25/01/21
38
24/02/21
29
25/03/21
26
27/04/21
25
19/05/21
30
23/06/21
12
29/07/21
36
20/10/21
29
24/11/21
27
27/12/21
30