| Jahr | Monat | Sichtungen |
|---|---|---|
| 2013 | 6 | 2 |
| 2013 | 5 | 9 |
| 2013 | 4 | 9 |
| 2013 | 3 | 25 |
| 2013 | 2 | 21 |
| 2013 | 1 | 52 |
| 2012 | 12 | 31 |
| 2012 | 11 | 23 |
| 2012 | 10 | 25 |
| 2012 | 9 | 25 |
| 2012 | 8 | 44 |
| 2012 | 7 | 79 |
| 2012 | 6 | 29 |
| 2012 | 5 | 41 |
| 2012 | 4 | 5 |
| 2012 | 3 | 10 |
| 2012 | 2 | 12 |
| 2012 | 1 | 22 |
| 2011 | 12 | 1 |
| Average | / Monat | 24.4736842105 |
| Total | - | 465 |