LE TREZON A YZERNAY, paramètre Orthophosphates (PO4) mg(PO4)/L

16/01/15
0.12
18/02/15
0.1
16/03/15
0.1
16/04/15
0.1
01/06/15
0.1
12/10/15
0.1
09/11/15
0.1
07/12/15
0.1
03/03/16
0.1
31/03/16
0.1
18/04/16
0.1
20/06/16
0.1
10/10/16
0.1
14/11/16
0.1
12/12/16
0.1
09/03/17
0.1
10/04/17
0.1
19/06/17
0.1
16/10/17
0.1
13/11/17
0.1
04/12/17
0.1
05/03/19
0.03
09/04/19
0.04
17/06/19
0.16
05/11/19
0.11
03/12/19
0.11