condition mean min max 4 h after light 4.242355 3.99603 4.48868 8 h after light 3.907125 3.39881 4.41544 12 h after light 4.967935 4.81518 5.12069 4 h after dark 8.7309 8.35505 9.10675 8 h after dark 7.061145 6.70409 7.4182 12 h after dark 7.922454999999999 6.75172 9.09319