condition mean min max 0 h after light 3.265645 3.24665 3.28464 4 h after light 3.773305 3.51795 4.02866 8 h after light 4.174035 3.95932 4.38875 4 h after dark 4.841075 4.19887 5.48328 8 h after dark 4.32348 4.27804 4.36892 12 h after dark 3.83852 3.5633 4.11374