condition mean min max 4 h after light 31200.762776666666 27685.54 35579.99333 8 h after light 25874.87778 21056.68667 33634.17667 12 h after light 34451.838886666665 22410.76333 51885.28 1.5 h after dark 42922.25 37426.17333 45908.94667 5.5 h after dark 35665.94222 31197.14333 40249.06 9.5 h after dark 53853.54111333333 39602.16 78708.93667