condition mean min max 4 h after light 87.58045 84.8921 90.2688 8 h after light 102.33775 98.1415 106.534 12 h after light 80.27185 78.0123 82.5314 4 h after dark 71.0994 68.7945 73.4043 8 h after dark 63.7791 63.3347 64.2235 12 h after dark 82.7807 82.3696 83.1918