RAU DE GESVRES à CHAPELLE-SUR-ERDRE (LA), paramètre Nitrates mg(NO3)/L

25/02/13
17.9
04/04/13
15.2
28/06/13
14.4
07/08/13
12
14/10/13
8.5
05/12/13
13
18/02/14
12
01/04/14
11
24/06/14
13
04/08/14
9.9
08/10/14
6.9
02/12/14
11
13/02/15
13
17/04/15
15
15/06/15
12
20/08/15
6.9
12/10/15
6.8
11/12/15
8.3
28/04/16
12.6
27/06/16
9.6
25/08/16
9.1
21/10/16
8.6
20/12/16
10.2
27/02/17
13.3
27/04/17
11.8
29/06/17
2.2
30/08/17
0.6
26/10/17
2.5
19/12/17
18
25/01/18
12
28/02/18
15
23/03/18
12
27/04/18
10
29/05/18
8.2
28/06/18
10
31/07/18
6.6
31/08/18
8.3
21/09/18
5.2
18/10/18
2.7
30/11/18
13
28/02/19
13
26/04/19
7.3
05/07/19
6.2
30/08/19
1.3
28/10/19
7.2
30/12/19
13
28/02/20
5.9
28/04/20
8.4
30/06/20
8.9
31/08/20
6.1
28/10/20
8
18/02/21
12
26/04/21
12
18/06/21
7.7
27/08/21
5
22/10/21
5.4
22/12/21
10
26/01/22
12
25/02/22
10
15/03/22
8.5
29/04/22
9.4
19/05/22
10
28/06/22
7.8
26/07/22
1.8
29/08/22
0.6
15/09/22
1.3
28/10/22
1.6
25/11/22
13
23/01/23
15
28/02/23
12
22/03/23
9.5
28/04/23
8.9
30/05/23
12
30/06/23
7.9
28/07/23
6.5
30/08/23
4
21/09/23
5.6
30/10/23
13
24/11/23
9.7