RAU DE PRIGNY A MOUTIERS-EN-RETZ, paramètre Demande Biochimique en oxygène en 5 jours (D.B.O.5) mg(O2)/L

22/01/15
1.8
25/03/15
2.1
20/05/15
4.1
17/06/15
3.2
14/10/15
3.3
16/11/15
4
26/01/16
0.7
23/03/16
1.4
25/05/16
2.1
22/06/16
3.4
19/10/16
3.6
17/11/16
3.3
24/01/17
4.3
14/03/17
1.7
17/05/17
3.1
14/06/17
2.7
25/01/18
0.9
07/03/18
2.5
17/05/18
3.4
21/06/18
2.9
15/11/18
3.6
15/02/22
0.68
04/04/22
2.3