condition mean min max ZT0-3 45.817883333333334 12.783249999999999 65.4548 ZT4-7 16.1358 16.1358 16.1358 ZT8-11 15.69285 15.69285 15.69285 ZT12-15 17.1751 13.9191 20.4311 ZT16-19 36.47839999999999 36.47839999999999 36.47839999999999 ZT20-23 63.1042 63.1042 63.1042