condition mean min max 4 h after light 16.997799999999998 15.8348 18.1608 8 h after light 14.542 13.3888 15.6952 12 h after light 13.495550000000001 12.9013 14.0898 4 h after dark 18.048099999999998 16.8162 19.28 8 h after dark 18.5753 17.9519 19.1987 12 h after dark 18.5345 18.3922 18.6768