| Dusk | Sunset | −6˚ | −12˚ | −18˚ |
| Date | m | m | m | m |
| 15-06-2007 | 9.65 | 14.6 | 20.09 | 21.5 |
| 13-8-2007 | 10.47 | 15.33 | 20.72 | 21.5 |
| 12-1-2008 | 9.29 | 15 | 18.9 | 20.2 |
| 9-2-2008 | 9.29 | 16.45 | 19.13 | 20.22 |
| 22-3-2008 | 9.46 | 12.7 | 18.55 | 19.7 |
| 23-3-2008 | 10.47 | 12.7 | 18.55 | 19.6 |
| 5-4-2008 | 9.98 | 13.65 | 18.33 | 20.32 |
| 6-4-2008 | 9.98 | 12.7 | 18.55 | 20.33 |
| 7-4-2008 | 10.47 | 14.6 | 20.09 | 20.94 |
| Mean | 9.89 | 14.192 | 19.212 | 20.48 |
| SD | 0.498 | 1.34 | 0.867 | 0.695 |