condition mean min max 4 h after light 12.291753333333332 7.86686 15.1731 8 h after light 6.96268 2.48366 9.59887 12 h after light 15.159706666666667 7.65742 23.7081 4 h after dark 18.9138 12.9606 23.5446 8 h after dark 28.4797 16.4458 43.1798 12 h after dark 28.4601 21.8933 36.5097