condition mean min max 4 h after light 8.176423333333332 4.284 12.2625 8 h after light 6.71884 1.90464 11.2267 12 h after light 7.819999999999999 4.91848 11.7876 4 h after dark 10.018016666666668 7.61005 11.8198 8 h after dark 9.40074 6.25882 12.5334 12 h after dark 11.474253333333333 9.52856 13.574