condition mean min max 4 h after light 1.6729733333333334 1.35358 2.2046 8 h after light 2.440988 0.394414 3.9913 12 h after light 3.05388 1.5117 4.55187 4 h after dark 3.6973833333333332 2.59126 4.93922 8 h after dark 2.82799 1.31846 4.07205 12 h after dark 1.5244366666666667 1.30427 1.78357