Graph
Year | Totals | Observation hours |
---|---|---|
2006 | 628 | 23:40 |
2007 | 561 | 71:05 |
2008 | 2176 | 94:25 |
2009 | 2760 | 91:45 |
2010 | 1511 | 159:55 |
2011 | 4420 | 208:42 |
2012 | 6426 | 196:45 |
2013 | 4929 | 239:26 |
2014 | 6546 | 218:15 |
2015 | 1295 | 145:35 |
2016 | 6492 | 217:52 |
2017 | 2732 | 191:09 |
2018 | 6724 | 243:43 |
2019 | 830 | 191:56 |
2020 | 1677 | 108:23 |
2021 | 4066 | 156:10 |
2022 | 1147 | 112:25 |