| Antwort | % Korrekt |
|---|---|
| Mosel | 88%
|
| Ruhr | 84%
|
| Main | 68%
|
| Lahn | 62%
|
| Wupper | 62%
|
| Neckar | 60%
|
| Lippe | 51%
|
| Sieg | 49%
|
| Erft | 46%
|
| Maas | 37%
|
| Nahe | 35%
|
| Emscher | 30%
|
| Aare | 22%
|