condition mean min max ZT0-3 0.011439125 0.0 0.02287825 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.012785033333333334 0.0 0.02557006666666667 ZT20-23 0 0 0