condition mean min max 2 h after light 6.767688333333333 5.02333 9.29576 6 h after light 6.10102 4.60397 7.66077 10 h after light 6.542718333333333 5.64139 7.63567 14 h after light 6.393833333333333 5.41672 7.00761 18 h after light 7.055899999999999 5.0503 8.55567 2 h after dark 9.422105 8.25876 10.8937