| Country | Period | Monitoring sites | Very negative | Marginally negative | No change | Marginally positive | Very positive | Sen slope (mg/l P) | Sen slope (%) |
|---|---|---|---|---|---|---|---|---|---|
| Europe | 1992-2018 | 262 | 110 | 18 | 110 | 4 | 20 | 0.0 | -0.8 |
| Austria | 1992-2018 | 4 | 1 | 0 | 2 | 0 | 1 | 0.0 | 0.9 |
| Denmark | 1992-2018 | 2 | 2 | 0 | 0 | 0 | 0 | -0.002 | -2.9 |
| Estonia | 1992-2018 | 7 | 1 | 0 | 6 | 0 | 0 | -0.001 | -0.6 |
| Finland | 1992-2018 | 145 | 47 | 13 | 66 | 3 | 16 | 0.0 | -0.5 |
| Germany | 1992-2018 | 2 | 2 | 0 | 0 | 0 | 0 | -0.006 | -2.8 |
| Lithuania | 1992-2018 | 2 | 1 | 0 | 1 | 0 | 0 | 0.0 | -2.6 |
| Netherlands | 1992-2018 | 6 | 5 | 0 | 1 | 0 | 0 | -0.005 | -2.9 |
| Norway | 1992-2018 | 2 | 0 | 0 | 2 | 0 | 0 | 0.0 | -0.2 |
| Slovenia | 1992-2018 | 2 | 1 | 0 | 1 | 0 | 0 | 0.0 | -1.1 |
| Sweden | 1992-2018 | 90 | 50 | 5 | 31 | 1 | 3 | 0.0 | -1.0 |
| Europe | 2000-2018 | 341 | 80 | 24 | 205 | 8 | 24 | 0.0 | -0.6 |
| Austria | 2000-2018 | 20 | 1 | 3 | 9 | 1 | 6 | 0.0 | 1.6 |
| Belgium | 2000-2018 | 1 | 1 | 0 | 0 | 0 | 0 | -0.012 | -9.4 |
| Bulgaria | 2000-2018 | 1 | 0 | 0 | 1 | 0 | 0 | -0.001 | -2.4 |
| Croatia | 2000-2018 | 3 | 0 | 0 | 3 | 0 | 0 | 0.0 | -0.7 |
| Denmark | 2000-2018 | 2 | 2 | 0 | 0 | 0 | 0 | -0.001 | -2.7 |
| Estonia | 2000-2018 | 8 | 2 | 0 | 6 | 0 | 0 | -0.001 | -1.0 |
| Finland | 2000-2018 | 173 | 39 | 14 | 102 | 5 | 13 | 0.0 | -0.6 |
| France | 2000-2018 | 1 | 1 | 0 | 0 | 0 | 0 | -0.001 | -4.6 |
| Germany | 2000-2018 | 5 | 3 | 0 | 2 | 0 | 0 | -0.004 | -2.2 |
| Lithuania | 2000-2018 | 3 | 2 | 0 | 1 | 0 | 0 | 0.0 | -2.6 |
| Netherlands | 2000-2018 | 6 | 4 | 0 | 2 | 0 | 0 | -0.006 | -4.8 |
| Norway | 2000-2018 | 3 | 0 | 0 | 3 | 0 | 0 | 0.0 | 3.2 |
| Poland | 2000-2018 | 9 | 4 | 0 | 5 | 0 | 0 | -0.001 | -2.5 |
| Romania | 2000-2018 | 2 | 1 | 0 | 1 | 0 | 0 | -0.003 | -0.5 |
| Serbia | 2000-2018 | 5 | 0 | 0 | 4 | 0 | 1 | 0.002 | 5.2 |
| Slovenia | 2000-2018 | 3 | 0 | 0 | 3 | 0 | 0 | -0.002 | -1.4 |
| Sweden | 2000-2018 | 95 | 20 | 7 | 62 | 2 | 4 | 0.0 | -0.6 |
| United Kingdom | 2000-2018 | 1 | 0 | 0 | 1 | 0 | 0 | 0.0 | -0.4 |