condition mean min max 4 h after light 5.784136 4.823717 6.675253 8 h after light 2.667006 1.545292 3.933586 12 h after light 4.761981333333333 3.39365 5.798888 16 h after light 5.659659333333333 4.51483 6.975934 4 h after dark 7.576192 5.572438 11.45558 8 h after dark 10.703812333333333 9.075547 11.78495