condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.96805 0.0 1.9361 8 h after light 0.161898 0.0 0.323796 4 h after dark 0.4840555 0.0 0.968111 8 h after dark 0.1625245 0.0 0.325049 12 h after dark 0.159862 0.0 0.319724