condition mean min max 0 h after light 6.17645 6.09582 6.25708 2 h after light 4.513315 4.33146 4.69517 4 h after light 4.85482 4.75338 4.95626 8 h after light 4.65186 4.5456 4.75812 12 h after light 4.961085 4.36633 5.55584 2 h after dark 4.18544 4.08653 4.28435 4 h after dark 4.103635 3.58799 4.61928 8 h after dark 5.46659 4.74117 6.19201 12 h after dark 6.6749 6.13666 7.21314