condition mean min max 2 h after light 4.350185 3.31221 5.30517 6 h after light 5.782968333333333 4.5482 7.29982 10 h after light 6.369221666666666 3.83024 8.55995 14 h after light 6.802325 5.36933 8.76077 18 h after light 7.158451666666666 5.15839 9.27132 2 h after dark 6.95062 5.02328 9.46287