condition mean min max 0 h after light 0.0 0.0 0.0 2 h after light 2.149505 0.0 4.29901 4 h after light 0.0 0.0 0.0 8 h after light 1.969745 0.0 3.93949 12 h after light 10.40222 7.69164 13.1128 2 h after dark 7.88435 0.0 15.7687 4 h after dark 0.0 0.0 0.0 8 h after dark 4.230155 4.1534 4.30691 12 h after dark 12.0276 11.793 12.2622