Graph
Year | Totals | Observation hours |
---|---|---|
1997 | 391 | 39:30 |
1999 | 58 | 19:00 |
2001 | 2478 | 594:30 |
2002 | 0 | 0:00 |
2005 | 148 | 77:15 |
2006 | 5 | 32:05 |
2007 | 41 | 88:45 |
2008 | 471 | 100:00 |
2009 | 18 | 52:20 |
2010 | 48 | 48:05 |
2011 | 179 | 88:24 |
2012 | 131 | 36:20 |
2013 | 130 | 37:30 |
2014 | 60 | 30:40 |
2015 | 144 | 44:40 |
2016 | 1402 | 163:00 |
2017 | 1092 | 179:29 |
2018 | 836 | 380:50 |
2019 | 1570 | 344:15 |
2020 | 1584 | 447:51 |
2021 | 1753 | 462:39 |