GUIRANDE à FRONTENAY-ROHAN-ROHAN, paramètre Nitrates mg(NO3)/L

19/01/12
62.1
20/02/12
50.9
21/03/12
38.6
26/04/12
57.3
30/05/12
54
14/06/12
48.3
18/07/12
47.9
30/08/12
23.8
13/09/12
16.3
16/10/12
45.5
06/11/12
60.5
12/12/12
61.3
26/02/13
60.9
08/03/13
47.2
25/04/13
57.7
30/05/13
48.9
26/06/13
54
05/07/13
51.5
27/08/13
34.8
19/09/13
42.8
24/10/13
35
14/11/13
53
23/12/13
47
27/02/14
46
19/03/14
49
29/04/14
41
24/06/14
38
28/07/14
37
26/08/14
45
15/09/14
45
21/10/14
46
27/11/14
46
18/12/14
41
26/01/15
44
13/02/15
42
13/03/15
47
03/04/15
39
28/05/15
47
25/06/15
44
02/07/15
35
28/08/15
43
22/09/15
49
28/10/15
39
26/11/15
34
10/12/15
41
06/02/20
62
17/06/20
45
20/08/20
39
20/10/20
55
02/11/20
58
17/12/20
55
23/02/21
63
22/06/21
46
19/08/21
17
22/10/21
13
16/12/21
43
18/10/22
20
14/11/22
16
19/12/22
43
13/01/23
70
10/02/23
64
13/03/23
53
28/04/23
54
23/05/23
48
26/06/23
55
31/07/23
39
25/08/23
26
15/09/23
34