condition mean min max 4 h after light 1224.244708 1023.242571 1425.246845 8 h after light 1664.7697285 1656.998347 1672.54111 12 h after light 1714.2442190000002 1601.567728 1826.92071 4 h after dark 2178.006707 1903.690967 2452.322447 8 h after dark 2412.4009805 1968.565265 2856.236696 12 h after dark 1584.240533 1584.240533 1584.240533