condition mean min max 0 h after light 2.8784799999999997 2.65199 3.10497 4 h after light 2.857475 2.64647 3.06848 8 h after light 1.9379549999999999 1.77955 2.09636 4 h after dark 2.9162 2.02824 3.80416 8 h after dark 3.246735 2.67369 3.81978 12 h after dark 3.1670550000000004 3.03439 3.29972