SEVRE NIORTAISE à MAGNE, paramètre Nitrates mg(NO3)/L

19/01/12
47.7
20/02/12
41.4
21/03/12
39.4
26/04/12
33.4
30/05/12
38.7
14/06/12
40.9
18/07/12
37.4
30/08/12
24.9
13/09/12
21.8
16/10/12
24.6
06/11/12
36.3
12/12/12
42.1
26/02/13
48.7
25/04/13
43.5
26/06/13
37.5
27/08/13
37
24/10/13
30
23/12/13
47
26/02/14
42
29/04/14
40
24/06/14
44
26/08/14
34
21/10/14
36
18/12/14
38
13/02/15
39
03/04/15
38
25/06/15
36
27/08/15
26
28/10/15
38
10/12/15
35
24/02/16
38.3
05/04/16
35
06/06/16
21.3
09/08/16
27.2
05/10/16
23.3
20/12/16
27.6
02/02/17
29.9
02/03/17
35.5
05/04/17
41.2
30/05/17
34.3
14/06/17
29.5
26/07/17
23
02/08/17
21
04/09/17
16
03/10/17
19
07/12/17
22
09/01/18
39
01/02/18
45
27/03/18
41
03/04/18
36
02/05/18
43
04/06/18
38
25/07/18
36
01/08/18
35
03/09/18
20
03/10/18
24
05/11/18
27
05/12/18
48
07/02/19
42
26/04/19
37
28/06/19
34
27/08/19
23
30/10/19
44
19/12/19
46
06/02/20
44
17/06/20
41
20/08/20
30
20/10/20
35
02/11/20
39
17/12/20
42
23/02/21
45
22/04/21
42
22/06/21
30
19/08/21
24
22/10/21
24
16/12/21
31
15/02/22
41
06/04/22
36
13/06/22
27
12/08/22
14
18/10/22
19
19/12/22
35
10/02/23
46
28/04/23
39
26/06/23
34
25/08/23
23
24/10/23
27