condition mean min max 0 h after light 0.43095 0.36603 0.49587 4 h after light 0.307808 0.20391 0.411706 8 h after light 0.246786 0.106266 0.387306 4 h after dark 0.346893 0.25632 0.437466 8 h after dark 0.3485165 0.334148 0.362885 12 h after dark 0.241137 0.182444 0.29983