condition mean min max 4 h after light 139.1176675 108.866799 169.368536 8 h after light 162.223168 153.358126 171.08821 12 h after light 170.5581595 137.422724 203.693595 4 h after dark 172.9212085 158.71635 187.126067 8 h after dark 129.69432849999998 126.256902 133.131755 12 h after dark 163.16128 163.16128 163.16128