condition mean min max 4 h after light 0.494825 0.456705 0.532945 8 h after light 1.340765 1.28802 1.39351 12 h after light 2.04895 1.74878 2.34912 4 h after dark 3.9576599999999997 2.63554 5.27978 8 h after dark 1.687235 1.48041 1.89406 12 h after dark 1.3463699999999998 1.18359 1.50915