RUISSEAU DE LA GUICHARDIERE A MAULEVRIER, paramètre Nitrates mg(NO3)/L

16/01/15
33
19/02/15
32
16/03/15
19
15/04/15
8.9
02/06/15
5
13/10/15
11
13/11/15
26
08/12/15
11
02/03/16
21
30/03/16
12
19/04/16
8.1
22/06/16
5.2
11/10/16
42
15/11/16
42
13/12/16
41
08/03/17
44
11/04/17
26
20/06/17
8.9
17/10/17
15
14/11/17
31
05/12/17
29
06/03/19
23.9
08/04/19
12.6
18/06/19
27.9
07/10/19
15.6
04/11/19
47.9
03/12/19
41.3
26/09/22
10
24/10/22
1.2
28/11/22
3.7