condition mean min max 4 h after light 59.13665 52.1727 66.1006 8 h after light 72.91525 60.249 85.5815 12 h after light 6.795345 6.68937 6.90132 4 h after dark 1.30869 1.2993 1.31808 8 h after dark 3.07559 2.2789 3.87228 12 h after dark 13.42635 12.8204 14.0323