condition mean min max 0 h after light 14.72185 14.349 15.0947 4 h after light 12.7522 11.5633 13.9411 8 h after light 22.00805 20.2389 23.7772 4 h after dark 22.5322 21.5105 23.5539 8 h after dark 20.2335 19.858 20.609 12 h after dark 14.70205 12.4336 16.9705