condition mean min max 4 h after light 3812.6 3812.6 3812.6 8 h after light 4517.5 4087.6 4947.4 12 h after light 4021.55 2864.1 5179.0 4 h after dark 3599.2 2940.2 4258.2 8 h after dark 3827.1 3123.7 4530.5 12 h after dark 2740.6 1984.3 3496.9