condition mean min max 4 h after light 1004.3 1004.3 1004.3 8 h after light 1140.6 1116.7 1164.5 12 h after light 1309.1 1049.4 1568.8 4 h after dark 1524.8000000000002 1454.4 1595.2 8 h after dark 1712.75 1703.0 1722.5 12 h after dark 1745.35 1627.3 1863.4