condition mean min max ZT0-3 44.5694 44.5694 44.5694 ZT4-7 25.522399999999998 25.522399999999998 25.522399999999998 ZT8-11 24.00855 24.00855 24.00855 ZT12-15 51.96055 51.96055 51.96055 ZT16-19 84.5533 84.5533 84.5533 ZT20-23 68.97003333333333 68.97003333333333 68.97003333333333