condition mean min max 0 h after light 9.75733 9.58123 9.93343 4 h after light 6.510154999999999 6.32119 6.69912 8 h after light 5.633395 5.55315 5.71364 4 h after dark 7.1592 6.92705 7.39135 8 h after dark 9.165955 8.94877 9.38314 12 h after dark 9.32784 8.47748 10.1782