condition mean min max ZT0-3 0.22580443725000005 0.10291625800000001 0.34869261650000005 ZT4-7 1.10867173425 0.591435092 1.6259083765 ZT8-11 3.2518637984999996 2.5326075985 3.9711199985 ZT12-15 6.4920806222500005 6.0958511585 6.888310086 ZT16-19 5.1777049989999995 4.796494824 5.558915174 ZT20-23 6.41483110125 6.126075204999999 6.7035869975