condition mean min max ZT0-3 22.55655 22.55655 22.55655 ZT4-7 22.34755 22.34755 22.34755 ZT8-11 13.651499999999999 13.651499999999999 13.651499999999999 ZT12-15 12.60775 12.60775 12.60775 ZT16-19 17.036099999999998 17.036099999999998 17.036099999999998 ZT20-23 22.758699999999997 22.758699999999997 22.758699999999997