condition mean min max 4 h after light 59.1061 56.9827 61.2295 8 h after light 27.84785 27.7115 27.9842 12 h after light 13.2616 12.296 14.2272 4 h after dark 14.7146 13.3655 16.0637 8 h after dark 20.07565 19.0378 21.1135 12 h after dark 30.57145 27.6338 33.5091