Nur zu Testzwecken, wird nicht fortgeführt.
| Jahr | Monat | Sichtungen |
|---|---|---|
| 2021 | 7 | 5 |
| 2021 | 6 | 4 |
| 2021 | 5 | 7 |
| 2021 | 4 | 1 |
| 2021 | 3 | 4 |
| 2021 | 2 | 3 |
| 2021 | 1 | 2 |
| 2020 | 12 | 3 |
| 2020 | 11 | 1 |
| 2020 | 10 | 3 |
| 2020 | 8 | 2 |
| 2020 | 7 | 3 |
| 2020 | 6 | 6 |
| 2020 | 5 | 3 |
| 2020 | 4 | 2 |
| 2020 | 2 | 8 |
| 2020 | 1 | 5 |
| 2019 | 12 | 4 |
| 2019 | 11 | 10 |
| Total | 76 | |