condition mean min max 0 h after light 1.6164399999999999 1.29177 1.94111 4 h after light 3.580545 2.33496 4.82613 8 h after light 1.0773190000000001 0.876628 1.27801 4 h after dark 0.5298705 0.422894 0.636847 8 h after dark 2.02241 1.92443 2.12039 12 h after dark 1.1661409999999999 0.860022 1.47226