Graph
Year | Totals | Observation hours |
---|---|---|
1956 | 0 | 13:45 |
1958 | 0 | 11:00 |
1959 | 0 | 3:20 |
1960 | 0 | 1:45 |
1961 | 0 | 8:30 |
1962 | 0 | 0:00 |
1963 | 0 | 8:00 |
1977 | 5 | 29:30 |
1978 | 0 | 27:30 |
1982 | 0 | 3:00 |
1986 | 0 | 50:00 |
1987 | 0 | 56:35 |
2001 | 0 | 0:00 |
2002 | 0 | 0:00 |
2003 | 0 | 12:30 |
2004 | 6 | 44:15 |
2005 | 866 | 1018:50 |
2006 | 29 | 647:30 |
2007 | 933 | 816:41 |
2008 | 442 | 648:15 |
2009 | 392 | 446:08 |
2010 | 106 | 645:00 |
2011 | 270 | 681:30 |
2012 | 311 | 422:55 |
2013 | 242 | 613:10 |
2014 | 295 | 473:05 |
2015 | 525 | 560:45 |
2016 | 189 | 427:55 |
2017 | 207 | 576:05 |
2018 | 45 | 430:45 |
2019 | 45 | 455:27 |
2020 | 114 | 506:07 |
2021 | 1491 | 1013:52 |
2022 | 805 | 726:25 |
2023 | 0 | 20:00 |