VILAINE à CHATEAUBOURG, paramètre Nitrates mg(NO3)/L

07/01/13
31
05/02/13
30
04/03/13
38
08/04/13
33
13/05/13
25
11/06/13
21
08/07/13
16
06/08/13
12
02/09/13
8.6
08/10/13
3.9
06/11/13
12
05/12/13
17
07/01/14
25
05/02/14
25
03/03/14
23
08/04/14
25
13/05/14
18
11/06/14
15
09/07/14
9.8
05/08/14
6.9
10/09/14
5.5
08/10/14
3.5
04/11/14
6.7
02/12/14
14
13/01/15
24
15/01/15
22
11/02/15
35
04/03/15
27
02/04/15
25
30/04/15
20.5
05/05/15
22
03/06/15
17
07/07/15
9.3
04/08/15
5.5
27/08/15
5.1
09/09/15
3.3
30/09/15
2.6
28/10/15
3.3
20/11/15
5
03/12/15
8