condition mean min max 4 h after light 994.4 994.4 994.4 8 h after light 1171.2 902.5 1439.9 12 h after light 1449.45 1246.9 1652.0 4 h after dark 1182.3 689.3 1675.3 8 h after dark 1095.4499999999998 1035.1 1155.8 12 h after dark 1393.95 1247.4 1540.5