condition mean min max 4 h after light 325.5 325.5 325.5 8 h after light 325.15 318.8 331.5 12 h after light 492.75 367.4 618.1 4 h after dark 464.15 357.5 570.8 8 h after dark 539.3499999999999 444.4 634.3 12 h after dark 723.45 665.6 781.3