RUISSEAU DE LA GUICHARDIERE A MAULEVRIER, paramètre Orthophosphates (PO4) mg(PO4)/L

16/01/15
0.52
19/02/15
0.14
16/03/15
0.1
15/04/15
0.1
02/06/15
0.2
13/10/15
0.1
13/11/15
0.15
08/12/15
0.27
02/03/16
0.3
30/03/16
0.1
19/04/16
0.1
22/06/16
0.11
11/10/16
0.11
15/11/16
0.14
13/12/16
0.2
08/03/17
0.73
11/04/17
0.26
20/06/17
10.4
17/10/17
0.1
14/11/17
0.11
05/12/17
0.1
06/03/19
0.01
08/04/19
0.03
18/06/19
6.2
07/10/19
2.4
04/11/19
4
03/12/19
0.68