condition mean min max 4 h after light 4.44536 2.86832 5.27107 8 h after light 2.919573333333333 1.00553 5.02571 12 h after light 3.0259033333333334 1.74886 4.1785 4 h after dark 5.586413333333334 5.15772 6.20419 8 h after dark 7.22917 6.14628 8.67175 12 h after dark 8.23338 6.48273 10.4873