condition mean min max 0 h after light 1.27989 1.06248 1.4973 4 h after light 1.56966 1.1687 1.97062 8 h after light 1.91198 1.72824 2.09572 4 h after dark 2.547405 2.33755 2.75726 8 h after dark 1.976305 1.5361 2.41651 12 h after dark 1.56703 1.18377 1.95029