condition mean min max 4 h after light 1809.0 1809.0 1809.0 8 h after light 1236.45 1077.7 1395.2 12 h after light 720.6 579.0 862.2 4 h after dark 836.1 470.7 1201.5 8 h after dark 1393.6 917.1 1870.1 12 h after dark 1944.85 1363.1 2526.6