condition mean min max ZT0-3 0.35834350000000004 0.25781600000000005 0.45887100000000003 ZT4-7 0.3271765 0.3271765 0.3271765 ZT8-11 0.856055 0.856055 0.856055 ZT12-15 0 0 0 ZT16-19 1.0317669999999999 1.0317669999999999 1.0317669999999999 ZT20-23 0.797871 0.797871 0.797871