condition mean min max 4 h after light 16.28485 16.1758 16.3939 8 h after light 15.0433 13.9023 16.1843 12 h after light 16.82045 16.2219 17.419 4 h after dark 20.75885 20.5078 21.0099 8 h after dark 18.479750000000003 17.9522 19.0073 12 h after dark 18.3479 18.0811 18.6147