condition mean min max 4 h after light 3.453875 3.15272 3.75503 8 h after light 4.335735 2.82085 5.85062 12 h after light 3.0855449999999998 2.00073 4.17036 4 h after dark 3.8938550000000003 3.04116 4.74655 8 h after dark 2.55539 2.48177 2.62901 12 h after dark 3.904675 3.45101 4.35834