condition mean min max 0 h after light 12.396550000000001 11.8427 12.9504 4 h after light 7.764805 6.93717 8.59244 8 h after light 11.88025 10.5777 13.1828 4 h after dark 14.8048 11.5358 18.0738 8 h after dark 13.68435 12.458 14.9107 12 h after dark 12.668 10.2976 15.0384