condition mean min max 4 h after light 11.115166 9.11936 13.110972 8 h after light 10.8184385 10.565779 11.071098 12 h after light 10.890397 10.609455 11.171339 4 h after dark 12.505452 11.816274 13.19463 8 h after dark 11.6356865 10.945708 12.325665 12 h after dark 9.138912 9.138912 9.138912