Graph
Year | Totals | Observation hours |
---|---|---|
1997 | 4 | 39:30 |
1999 | 70 | 19:00 |
2001 | 5749 | 594:30 |
2002 | 0 | 0:00 |
2005 | 2029 | 77:15 |
2006 | 147 | 32:05 |
2007 | 2468 | 88:45 |
2008 | 2262 | 100:00 |
2009 | 1471 | 52:20 |
2010 | 221 | 48:05 |
2011 | 1906 | 88:24 |
2012 | 0 | 36:20 |
2013 | 526 | 37:30 |
2014 | 630 | 30:40 |
2015 | 1193 | 44:40 |
2016 | 2372 | 163:00 |
2017 | 5122 | 179:29 |
2018 | 8779 | 380:50 |
2019 | 7218 | 344:15 |
2020 | 21895 | 447:51 |
2021 | 43145 | 462:39 |