condition mean min max 0 h after light 34.2755 34.1572 34.3938 4 h after light 17.6967 17.2323 18.1611 8 h after light 11.4009 10.3278 12.474 4 h after dark 16.22805 13.2255 19.2306 8 h after dark 22.11795 21.2458 22.9901 12 h after dark 22.6504 19.8229 25.4779