condition mean min max ZT0-3 0.008526409666666667 0.0 0.017052819333333333 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 0.0314942475 0.019862344 0.043126151 ZT20-23 0.0 0.0 0.0