NOIRON à AIZENAY, paramètre Nitrates mg(NO3)/L

17/01/13
22
19/02/13
25
14/03/13
22
11/04/13
13
21/05/13
13
17/06/13
9.9
11/07/13
9.4
28/08/13
6.7
18/09/13
5.8
16/10/13
8.2
13/11/13
35
17/12/13
21
16/01/14
14
13/02/14
5.6
13/03/14
20
15/04/14
17
20/05/14
7.4
12/06/14
8.8
17/07/14
3
19/08/14
8.6
17/09/14
3.5
14/10/14
9.1
19/11/14
33
18/12/14
26
14/01/15
23
17/02/15
20
18/03/15
23
14/04/15
19
20/05/15
17
11/06/15
17
16/07/15
8.6
20/08/15
3.4
22/09/15
16
13/10/15
16
12/11/15
9.2
08/12/15
20
07/01/16
19
10/02/16
19
15/03/16
22
20/04/16
17
12/05/16
13
14/06/16
14
12/07/16
12
18/08/16
4.2
14/09/16
4.5
11/10/16
6.8
08/11/16
7
06/12/16
15
03/01/17
20
07/02/17
33
06/03/17
23
04/04/17
18
09/05/17
10
06/06/17
7
04/07/17
10
01/08/17
3.9
04/09/17
8
03/10/17
4.8
09/11/17
6.8
12/12/17
15
17/01/18
29
13/02/18
24
14/03/18
23
18/04/18
20
24/05/18
17
21/06/18
8.9
18/07/18
8.3
09/08/18
6.5
12/09/18
5.4
17/10/18
7.3
21/11/18
17
19/12/18
44
29/01/19
37
19/02/19
34
19/03/19
25
18/04/19
15
15/05/19
14
12/06/19
11
09/07/19
3.5
13/08/19
4.9
10/09/19
7.7
15/10/19
7.6
13/11/19
43
10/12/19
30
07/02/20
26
29/06/20
18
21/08/20
10
27/10/20
32
12/11/20
24
23/12/20
22
15/02/21
21
26/04/21
17
25/06/21
11
31/08/21
3.3
27/10/21
7.7
27/12/21
15
11/01/22
25
08/02/22
21
08/03/22
18
14/04/22
11
10/05/22
14
14/06/22
9.2
05/07/22
3.7
02/08/22
5
06/09/22
4.3
04/10/22
13
07/11/22
7.1
06/12/22
29
17/01/23
26
21/02/23
22
16/03/23
25
19/04/23
15
11/05/23
11
05/06/23
5.9
10/07/23
4.6
16/08/23
1.5
06/09/23
4.7