RAU DE MONTRETAUX À LA FERTE-BERNARD, paramètre Nitrates mg(NO3)/L

20/02/13
29.5
05/04/13
25.1
19/06/13
18.3
07/08/13
20.5
18/10/13
18
05/12/13
23
20/02/14
26
15/04/14
23
26/06/14
21
28/10/14
19
01/12/14
20
10/02/15
25
08/04/15
24
18/06/15
22
19/08/15
21
20/10/15
22
22/12/15
23
10/02/16
28.3
21/04/16
24.2
07/06/16
23
24/08/16
24.3
20/10/16
20.8
08/12/16
23.1
07/02/17
32.5
10/04/17
22.3
22/06/17
22
16/08/17
21
18/10/17
19
14/12/17
32
16/02/18
31
17/04/18
23
21/08/18
24
22/10/18
22
14/12/18
25
12/02/19
37
09/04/19
24
17/06/19
23
08/08/19
18
15/10/19
19
09/12/19
37
18/02/20
28
16/04/20
26
08/06/20
26
03/08/20
26
09/10/20
22
07/12/20
24
15/02/21
31
08/04/21
25
07/06/21
26
16/08/21
26
07/10/21
22
07/12/21
22