condition mean min max 0 h after light 13.26135 12.1064 14.4163 4 h after light 8.280775 8.18271 8.37884 8 h after light 8.12787 7.41997 8.83577 4 h after dark 5.09701 4.1129 6.08112 8 h after dark 8.773060000000001 8.73625 8.80987 12 h after dark 12.8614 12.6822 13.0406