Graph
Year | Totals | Observation hours |
---|---|---|
1997 | 2 | 39:30 |
1999 | 0 | 19:00 |
2001 | 1713 | 594:30 |
2002 | 0 | 0:00 |
2005 | 527 | 77:15 |
2006 | 302 | 32:05 |
2007 | 1180 | 88:45 |
2008 | 1797 | 100:00 |
2009 | 189 | 52:20 |
2010 | 331 | 48:05 |
2011 | 1243 | 88:24 |
2012 | 127 | 36:20 |
2013 | 999 | 37:30 |
2014 | 263 | 30:40 |
2015 | 113 | 44:40 |
2016 | 2319 | 163:00 |
2017 | 2141 | 179:29 |
2018 | 6051 | 380:50 |
2019 | 4732 | 344:15 |
2020 | 4923 | 447:51 |