BOIVRE à SAINT-PERE-EN-RETZ, paramètre Demande Biochimique en oxygène en 5 jours (D.B.O.5) mg(O2)/L

16/02/10
3
15/04/10
2.2
11/06/10
9
11/08/10
20
22/10/10
7
07/12/10
1.5
18/02/11
1.7
19/04/11
3.4
16/06/11
16
29/08/11
8.5
27/10/11
4.9
12/12/11
1.4
08/02/12
3.2
19/04/12
2.6
04/06/12
8
30/08/12
23
30/10/12
3.9
14/12/12
3.5
11/02/13
1.3
25/04/13
2.4
24/06/13
6.7
20/08/13
27
18/10/13
4.5
04/12/13
3.1
17/02/14
1.2
29/04/14
4.3
26/06/14
9
10/09/14
7
23/10/14
2.8
23/12/14
2.5
19/02/15
2.1
02/04/15
4.3
16/06/15
6
13/08/15
7
29/10/15
3.3
14/12/15
1.6
23/02/16
2.1
07/04/16
2.5
21/06/16
6
18/08/16
8
17/10/16
6
15/12/16
3.6
28/02/17
3.6
10/04/17
51
09/06/17
7
07/08/17
9
09/10/17
7
06/12/17
3.2
20/02/18
3
19/04/18
4.3
14/06/18
3.5
14/08/18
14
26/10/18
3.3
11/12/18
1.8
15/10/19
2.4
17/12/19
1.3
12/02/20
1.4
06/04/20
2.3
02/06/20
7
12/08/20
8
21/10/20
7
08/12/20
1.7
03/02/21
1.3
21/04/21
4.9
30/06/21
4.4
19/08/21
8
28/10/21
3.7
10/12/21
2.4
16/02/22
1.8
14/04/22
2.6
15/06/22
26
04/08/22
7