CANAL DE NANTES A BREST à NORT-SUR-ERDRE, paramètre Demande Biochimique en oxygène en 5 jours (D.B.O.5) mg(O2)/L

18/02/13
3.1
23/04/13
6.7
20/06/13
6.5
19/08/13
3.2
16/10/13
1.8
16/12/13
3.4
12/02/14
2
22/04/14
6
17/06/14
6.6
21/08/14
3.5
17/10/14
6.1
15/12/14
5.3
13/02/15
2.9
22/04/15
6
15/06/15
6
24/08/15
3.4
12/10/15
3
10/12/15
3
19/02/16
2.1
20/04/16
1.1
15/06/16
0.8
25/08/16
3.7
13/10/16
1.5
20/12/16
2.3
20/02/17
4.2
19/04/17
3.3
21/06/17
2.5
29/08/17
1.9
18/10/17
1.7
11/12/17
2.6
17/01/18
5.5
15/02/18
2.4
22/03/18
4.6
17/04/18
6
28/05/18
3.6
19/06/18
7.2
30/07/18
1.6
21/08/18
3.6
05/09/18
1
19/10/18
2.5
30/11/18
3.1
11/12/18
1.6
06/02/19
2.1
17/04/19
1.9
05/07/19
3.9
22/08/19
3.7
21/10/19
2.6
20/12/19
4.3
26/02/20
1.8
16/04/20
3.5
25/06/20
2.7
25/08/20
4
23/10/20
1.5
18/12/20
1.4
24/02/21
1
23/04/21
5.7
24/06/21
3.1
16/08/21
2.7
26/10/21
4.1
22/12/21
4.2
23/02/22
5.1
21/04/22
4.7
28/06/22
3.2
23/08/22
3.6
26/10/22
1.8
28/11/22
4.2
28/12/22
1.2
23/01/23
1
23/02/23
3.6
22/03/23
4
26/04/23
5.3
30/05/23
1.8
28/06/23
2.4
28/07/23
3
Limite de quantif.
28/08/23
3.4
21/09/23
2.7
26/10/23
2.2