condition mean min max 4 h after light 26.88005 23.2438 30.5163 8 h after light 20.7785 20.3898 21.1672 12 h after light 16.4487 14.1192 18.7782 4 h after dark 17.965633333333333 17.5293 18.766 8 h after dark 17.693933333333334 16.6879 19.655 12 h after dark 31.6015 29.4324 35.6433