condition mean min max 4 h after light 9.082975000000001 8.32909 9.83686 8 h after light 16.33415 16.1176 16.5507 12 h after light 32.95715 29.9971 35.9172 4 h after dark 44.02345 43.2397 44.8072 8 h after dark 25.34785 25.2145 25.4812 12 h after dark 19.3001 19.0126 19.5876