condition mean min max 0 h after light 18.928 18.3332 19.5228 4 h after light 20.418100000000003 20.2008 20.6354 8 h after light 22.27145 22.0786 22.4643 4 h after dark 19.674500000000002 18.7128 20.6362 8 h after dark 19.79665 19.3588 20.2345 12 h after dark 21.5261 21.4911 21.5611