condition mean min max 0 h after light 0.77922 0.765747 0.792693 4 h after light 0.787291 0.778849 0.795733 8 h after light 1.052516 0.952302 1.15273 4 h after dark 1.0588765 0.945353 1.1724 8 h after dark 1.138195 1.06735 1.20904 12 h after dark 0.8136135 0.791629 0.835598