condition mean min max 0 h after light 0.03695955 0.0 0.0739191 4 h after light 0.22433465 0.0727503 0.375919 8 h after light 0.0740562 0.0730013 0.0751111 4 h after dark 0.2178355 0.217406 0.218265 8 h after dark 0.03664195 0.0 0.0732839 12 h after dark 0.1457715 0.144166 0.147377