SEVRE NANTAISE à SAINT-MALO-DU-BOIS, paramètre Demande Biochimique en oxygène en 5 jours (D.B.O.5) mg(O2)/L

24/01/13
3.2
21/02/13
2.1
27/03/13
2.3
24/04/13
3.3
29/05/13
2.6
24/06/13
3.1
12/07/13
3.1
23/08/13
4.2
12/09/13
5.5
23/10/13
2.6
15/11/13
3.5
12/12/13
2.9
19/02/14
1.8
28/03/14
4.1
11/04/14
3.4
23/05/14
5.8
11/06/14
2.6
30/07/14
3.4
06/08/14
4.9
30/09/14
3
15/10/14
2.3
26/11/14
3
23/12/14
2.6
27/01/15
2.9
19/02/15
3.9
23/03/15
4.3
01/04/15
3.9
29/05/15
2.3
15/06/15
3.9
30/07/15
6.6
20/08/15
8.6
24/09/15
2.4
26/10/15
2.3
25/11/15
3.2
22/12/15
2.4
27/01/16
1.4
18/02/16
2.1
14/03/16
1.6
26/04/16
2
23/05/16
2.5
22/06/16
0.5
Limite de quantif.
25/07/16
3.3
16/08/16
4
13/09/16
2.9
19/10/16
1.4
22/11/16
1.9
12/12/16
1.6
17/01/17
2.1
09/02/17
1.9
15/03/17
2
24/04/17
4.6
31/05/17
3.9
26/06/17
4.1
31/07/17
4.9
23/08/17
4.8
13/09/17
3.7
23/10/17
3.3
28/11/17
0.7
14/12/17
2.8
25/01/18
2.1
22/02/18
1.3
23/03/18
1.9
23/04/18
2.3
25/05/18
1.9
25/06/18
2.2
27/07/18
1.8
28/08/18
2.2
19/09/18
1.7
26/10/18
2.1
28/11/18
1.9
18/12/18
1.7
14/01/19
1.2
21/02/19
2.1
26/03/19
2.1
29/04/19
2.8
27/05/19
2.1
24/06/19
1.3
18/07/19
1.7
30/08/19
2.3
11/09/19
3
29/10/19
2.1
22/11/19
2.5
30/12/19
1.7
29/01/20
2.6
26/02/20
1.9
13/03/20
2.2
28/04/20
1.6
28/05/20
1.8
18/06/20
2.6
21/07/20
0.9
24/08/20
1.6
16/09/20
3.7
27/10/20
2.8
16/11/20
2.6
21/12/20
1.5
26/01/21
1.9
23/02/21
0.9
31/03/21
2.1
28/04/21
5.3
28/05/21
1.1
21/06/21
1.6
21/07/21
0.5
Limite de quantif.
17/08/21
1.7
22/09/21
0.5
Limite de quantif.
20/10/21
0.5
Limite de quantif.
29/11/21
1.5
22/12/21
2.5
24/01/22
1.8
23/02/22
1.9
09/03/22
1.4
27/04/22
2
17/05/22
1.5
22/07/22
1.8
25/08/22
4.5
08/09/22
1.8
24/10/22
0.5
Limite de quantif.
24/11/22
2.1
21/12/22
3.3
16/01/23
1.7
31/01/23
0.9
21/02/23
2.2
21/03/23
2.2
23/03/23
2
21/04/23
3.8
22/05/23
1.5
30/05/23
1.9
21/06/23
1.4
18/07/23
0.7
27/07/23
2.5
30/08/23
3.4
20/09/23
2.2
27/09/23
1.2
30/10/23
4
22/11/23
1.3
27/11/23
1.7
29/12/23
1.8
17/01/24
2.1
13/02/24
3.1
26/03/24
3.1
19/04/24
3
Limite de quantif.
21/05/24
5.2