condition mean min max 4 h after light 5.00963 3.50927 6.50999 8 h after light 6.05067 5.81004 6.2913 12 h after light 7.88136 7.60999 8.15273 4 h after dark 11.09695 10.9772 11.2167 8 h after dark 8.754995000000001 8.46453 9.04546 12 h after dark 8.58619 7.01618 10.1562