condition mean min max 4 h after light 84.318049 83.290283 85.345815 8 h after light 77.2110905 71.917743 82.504438 12 h after light 88.4018205 86.924525 89.879116 4 h after dark 90.5227215 86.924525 94.120918 8 h after dark 99.1280665 82.129536 116.126597 12 h after dark 86.924525 86.924525 86.924525