Graph
Year | Totals | Observation hours |
---|---|---|
2006 | 818 | 23:40 |
2007 | 757 | 71:05 |
2008 | 4296 | 94:25 |
2009 | 713 | 91:45 |
2010 | 3569 | 159:55 |
2011 | 2949 | 208:42 |
2012 | 5641 | 196:45 |
2013 | 3116 | 239:26 |
2014 | 2432 | 218:15 |
2015 | 2907 | 145:35 |
2016 | 2928 | 217:52 |
2017 | 3504 | 191:09 |
2018 | 6485 | 243:43 |
2019 | 2448 | 191:56 |
2020 | 4188 | 108:23 |
2021 | 2632 | 156:10 |
2022 | 2172 | 112:25 |