condition mean min max ZT0-3 0.08427312499999999 0.0413839 0.12716234999999998 ZT4-7 0.14828 0.14828 0.14828 ZT8-11 0.12694424999999998 0.12694424999999998 0.12694424999999998 ZT12-15 0 0 0 ZT16-19 0.0208026 0.0208026 0.0208026 ZT20-23 0.0417216 0.0417216 0.0417216