condition mean min max 0 h after light 10.607800000000001 10.5039 10.7117 4 h after light 13.037749999999999 11.6002 14.4753 8 h after light 15.9524 15.1127 16.7921 4 h after dark 19.21 18.6609 19.7591 8 h after dark 17.1554 16.6176 17.6932 12 h after dark 10.65508 9.52016 11.79