condition mean min max 4 h after light 0.731147 0.230471 1.39436 8 h after light 0.704999 0.248515 1.04477 12 h after light 0.49996 0.317204 0.785953 4 h after dark 0.916962 0.684558 1.24601 8 h after dark 0.9160986666666666 0.675643 1.17292 12 h after dark 1.1637203333333332 0.795339 1.72762