condition mean min max 4 h after light 19.0818 16.5836 22.763 8 h after light 1.2656213333333335 0.428374 2.06096 12 h after light 0.8493673333333334 0.539212 1.09021 4 h after dark 3.21069 3.07983 3.43725 8 h after dark 27.2504 22.2287 30.0312 12 h after dark 52.32106666666667 47.8642 55.4803