condition mean min max ZT0-3 0.6167463333333333 0.175782 1.1457169999999999 ZT4-7 0.3883755 0.3883755 0.3883755 ZT8-11 0.0 0.0 0.0 ZT12-15 0.099537 0.0 0.199074 ZT16-19 0.0158222 0.0158222 0.0158222 ZT20-23 0.0 0.0 0.0