condition mean min max 4 h after light 1.407888 0.829746 1.98603 8 h after light 1.39963 1.0208 1.77846 12 h after light 1.2232265 0.274393 2.17206 4 h after dark 3.40583 2.20106 4.6106 8 h after dark 1.0360065 0.724863 1.34715 12 h after dark 2.628915 2.40333 2.8545