condition mean min max 0 h after light 15.89065 15.8086 15.9727 4 h after light 15.19885 14.5277 15.87 8 h after light 16.8624 15.3805 18.3443 4 h after dark 19.20665 18.5698 19.8435 8 h after dark 16.14405 15.7519 16.5362 12 h after dark 14.059999999999999 13.3744 14.7456