condition mean min max 2 h after light 3.85643 3.16016 4.75156 6 h after light 4.83326 2.6958 7.08238 10 h after light 5.445771666666667 4.32504 8.40948 14 h after light 5.996225 4.44741 7.81364 18 h after light 6.4756599999999995 4.5835 10.6521 2 h after dark 5.89699 4.55286 8.32756