condition mean min max 2 h after light 8.289333333333333 6.95656 9.47962 6 h after light 7.24371 5.2316 8.45193 10 h after light 6.34241 5.50805 7.6108 14 h after light 6.477886666666667 4.36933 7.83393 18 h after light 7.242145 6.377 7.54568 2 h after dark 6.060578333333333 3.7439 9.02154