Localities: Arendal
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| Totalt alle år | 823 | 38 | 17 | 4628 |
| 2017 | 221 | 6 | 4 | 244 |
| 2016 | 272 | 5 | 3 | 388 |
| 2014 | 599 | 15 | 3 | 1980 |
| 2015 | 497 | 7 | 4 | 1330 |
| 2007 | 12 | 4 | 3 | 19 |
| 2020 | 6 | 5 | 3 | 7 |
| 2011 | 2 | 1 | 1 | 2 |
| 2013 | 370 | 2 | 1 | 641 |
| 2006 | 1 | 1 | 1 | 1 |
| 2018 | 4 | 3 | 3 | 4 |
| 2022 | 8 | 3 | 3 | 8 |
| 2019 | 2 | 4 | 3 | 4 |