Localities: Tvedestrand
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| 2024 | 5 | 1 | 1 | 5 |
| 2012 | 25 | 4 | 1 | 45 |
| 2023 | 31 | 8 | 3 | 77 |
| 2009 | 3 | 1 | 1 | 3 |
| 2014 | 23 | 2 | 1 | 38 |
| 2019 | 5 | 2 | 2 | 5 |
| 2015 | 27 | 4 | 2 | 52 |
| 2022 | 36 | 8 | 2 | 82 |
| 2021 | 4 | 1 | 1 | 4 |
| 2020 | 33 | 5 | 3 | 75 |
| 2018 | 23 | 4 | 2 | 39 |
| 2017 | 32 | 3 | 2 | 65 |
| 2016 | 30 | 4 | 2 | 64 |
| 2013 | 30 | 3 | 1 | 46 |
| 2010 | 4 | 2 | 1 | 4 |
| 2011 | 21 | 3 | 1 | 40 |
| Totalt alle år | 74 | 16 | 6 | 644 |