condition mean min max 4 h after light 2.486225 2.11969 2.85276 8 h after light 2.19908 2.06052 2.33764 12 h after light 2.4622349999999997 2.08372 2.84075 4 h after dark 3.12948 3.08486 3.18639 8 h after dark 2.8312166666666667 2.63753 2.94989 12 h after dark 2.4893433333333332 2.40556 2.64878