condition mean min max ZT0-3 77.3374 77.3374 77.3374 ZT4-7 132.6141 132.6141 132.6141 ZT8-11 15.576799999999999 15.576799999999999 15.576799999999999 ZT12-15 18.35065 18.35065 18.35065 ZT16-19 21.42685 21.42685 21.42685 ZT20-23 33.7337 33.7337 33.7337