condition mean min max 0 h after light 104.212 102.227 106.197 4 h after light 2029.155 1828.73 2229.58 8 h after light 1522.53 1517.25 1527.81 4 h after dark 20.2105 19.3458 21.0752 8 h after dark 32.12195 31.7732 32.4707 12 h after dark 152.7735 124.065 181.482