condition mean min max ZT0-3 49.0290523125 40.3431731 57.714931525 ZT4-7 50.4012707675 49.548169535 51.254372000000004 ZT8-11 45.021393287500004 44.889276625 45.15350995 ZT12-15 59.451709235 50.803622695 68.099795775 ZT16-19 79.29637884249999 77.424856165 81.16790152 ZT20-23 60.1354142825 51.911949805000006 68.35887876