condition mean min max 4 h after light 1323.8 1323.8 1323.8 8 h after light 1681.75 1288.1 2075.4 12 h after light 2054.75 1866.4 2243.1 4 h after dark 1592.5 1357.2 1827.8 8 h after dark 1260.35 1081.9 1438.8 12 h after dark 994.65 825.5 1163.8