condition mean min max 4 h after light 9.03833 8.93782 9.1314 8 h after light 9.10269 9.0481 9.160630000000001 12 h after light 8.921003333333333 8.74886 9.01271 4 h after dark 9.048089999999998 8.94794 9.116589999999999 8 h after dark 8.990563333333334 8.911710000000001 9.05086 12 h after dark 8.923536666666665 8.85282 8.9592