condition mean min max 4 h after light 6.631295 5.72582 7.53677 8 h after light 5.6616599999999995 5.15024 6.17308 12 h after light 6.156045 5.52436 6.78773 4 h after dark 13.593833333333333 12.7899 14.1745 8 h after dark 11.331576666666667 9.42183 12.9227 12 h after dark 7.603913333333333 4.35156 9.35492