condition mean min max 4 h after light 4043.8 4043.8 4043.8 8 h after light 3951.4 3920.3 3982.5 12 h after light 3678.35 3549.1 3807.6 4 h after dark 3034.1 2866.7 3201.5 8 h after dark 2758.9 2609.3 2908.5 12 h after dark 2664.75 2632.9 2696.6