condition mean min max 4 h after light 2516.377222 2309.725 2857.313333 8 h after light 3125.4238886666667 2453.193333 3630.263333 12 h after light 4009.395555333333 3763.703333 4353.48 1.5 h after dark 5088.5 4824.826667 5547.2 5.5 h after dark 4182.46 3918.096667 4585.723333 9.5 h after dark 3117.030000333333 2753.356667 3323.056667