condition mean min max 4 h after light 2835.1 2835.1 2835.1 8 h after light 2625.1000000000004 2547.9 2702.3 12 h after light 2474.7 2314.7 2634.7 4 h after dark 2694.2 2331.9 3056.5 8 h after dark 3034.5 2975.2 3093.8 12 h after dark 3157.3 3080.8 3233.8