condition mean min max 4 h after light 2.052913333333333 1.28887 2.70699 8 h after light 2.304052 0.376696 4.16154 12 h after light 4.622796666666667 2.85175 6.28607 4 h after dark 9.39113 6.49679 11.2423 8 h after dark 5.35435 4.25128 6.70903 12 h after dark 1.26746 1.07075 1.38924