condition mean min max 0 h after light 1.89358 1.54766 2.2395 4 h after light 1.51471 1.10204 1.92738 8 h after light 1.515685 1.10585 1.92552 4 h after dark 1.05772 1.01333 1.10211 8 h after dark 1.106913 0.762126 1.4517 12 h after dark 1.570745 1.54558 1.59591