Graph
Year | Totals | Observation hours |
---|---|---|
2006 | 4444 | 61:32 |
2007 | 8748 | 211:28 |
2008 | 34375 | 460:04 |
2009 | 20266 | 365:00 |
2010 | 25407 | 637:04 |
2011 | 17257 | 348:08 |
2012 | 15285 | 333:29 |
2013 | 22383 | 281:38 |
2014 | 10993 | 156:47 |
2015 | 2865 | 117:20 |
2016 | 1743 | 142:02 |
2017 | 4644 | 179:22 |
2018 | 12766 | 222:16 |
2019 | 3003 | 251:51 |
2020 | 6675 | 326:27 |
2021 | 3233 | 172:06 |
2022 | 291 | 72:35 |