condition mean min max 4 h after light 15.520248 14.878387 16.162109 8 h after light 14.572466 13.770341 15.374591 12 h after light 14.577886 14.577886 14.577886 4 h after dark 14.319592 14.124075 14.515109 8 h after dark 14.5862505 13.855605 15.316896 12 h after dark 14.577886 14.577886 14.577886