condition mean min max 4 h after light 9.433885 9.27009 9.59768 8 h after light 9.786915 9.60482 9.96901 12 h after light 13.675699999999999 13.2884 14.063 4 h after dark 22.8508 19.9001 24.8785 8 h after dark 20.081666666666667 19.1726 20.6864 12 h after dark 12.879566666666667 11.1233 14.492