condition mean min max 4 h after light 974.5 974.5 974.5 8 h after light 1414.05 907.5 1920.6 12 h after light 1616.6 1578.2 1655.0 4 h after dark 1679.6999999999998 1594.8 1764.6 8 h after dark 1636.2 1448.4 1824.0 12 h after dark 1515.35 1197.4 1833.3