condition mean min max 3 h after light 1.56215 1.36727 1.66356 6 h after light 5.868566666666667 5.71752 6.03564 9 h after light 15.7949 12.4843 17.6477 12 h after light 18.600366666666666 16.616 22.083 3 h after dark 4.065856666666667 3.50178 5.10987 6 h after dark 3.30455 2.38602 3.93393 9 h after dark 2.0475399999999997 1.54076 2.76238 12 h after dark 1.9754999999999998 1.40349 2.36842