condition mean min max ZT0-3 0.035125199999999995 0.035125199999999995 0.035125199999999995 ZT4-7 0.02867515 0.02867515 0.02867515 ZT8-11 0.0195951 0.0195951 0.0195951 ZT12-15 0.04566995 0.04566995 0.04566995 ZT16-19 0.0575818 0.0575818 0.0575818 ZT20-23 0.019094033333333333 0.019094033333333333 0.019094033333333333