condition mean min max 4 h after light 4017.0 4017.0 4017.0 8 h after light 3353.2 2743.0 3963.4 12 h after light 3063.5 2453.2 3673.8 4 h after dark 3796.25 3364.6 4227.9 8 h after dark 4822.7 3893.4 5752.0 12 h after dark 4975.5 4939.6 5011.4