condition mean min max ZT0-3 85.52941823833334 80.38026980666666 90.67856667000001 ZT4-7 85.73837557166667 84.60108981 86.87566133333334 ZT8-11 93.4498107 88.03497157 98.86464982999999 ZT12-15 92.52864360000001 89.98766688 95.06962032 ZT16-19 83.22679171833333 81.47656790333333 84.97701553333333 ZT20-23 79.07402583666666 78.91253007333334 79.2355216