condition mean min max 0 h after light 83.0398 80.931 85.1486 4 h after light 144.852 137.053 152.651 8 h after light 133.7615 121.39 146.133 4 h after dark 76.7932 76.6647 76.9217 8 h after dark 72.96685 71.1602 74.7735 12 h after dark 74.4003 70.5843 78.2163