condition mean min max 4 h after light 4.471346666666666 2.78174 6.5047 8 h after light 1.861791 0.514243 3.13774 12 h after light 2.39607 1.86085 3.41168 4 h after dark 4.991673333333333 2.85931 6.20032 8 h after dark 6.451573333333333 5.83861 6.79511 12 h after dark 5.12052 4.50941 5.53277