condition mean min max 4 h after light 7.034865 4.75163 9.3181 8 h after light 2.9963550000000003 2.70121 3.2915 12 h after light 168.78300000000002 167.216 170.35 4 h after dark 124.84033333333333 120.806 128.162 8 h after dark 53.16956666666667 51.9472 55.1314 12 h after dark 18.333866666666665 17.1374 20.3619