condition mean min max 0 h after light 1.6358899999999998 1.15608 2.1157 4 h after light 1.54561 1.32743 1.76379 8 h after light 1.2616155 0.761151 1.76208 4 h after dark 1.5156735 0.755597 2.27575 8 h after dark 1.52101 1.33717 1.70485 12 h after dark 1.419671 0.960392 1.87895