condition mean min max 4 h after light 1.23505 1.08211 1.38799 8 h after light 10.27656 9.78962 10.7635 12 h after light 28.825 28.0244 29.6256 4 h after dark 18.342550000000003 17.6064 19.0787 8 h after dark 10.110865 9.96633 10.2554 12 h after dark 3.7335 3.49048 3.97652