condition mean min max ZT0-3 41.348875 36.325450000000004 46.372299999999996 ZT4-7 31.410249999999998 31.410249999999998 31.410249999999998 ZT8-11 13.8559 13.8559 13.8559 ZT12-15 0 0 0 ZT16-19 27.5337 27.5337 27.5337 ZT20-23 51.14385 51.14385 51.14385