condition mean min max ZT0-3 0.00211668 0.00211668 0.00211668 ZT4-7 0.0183794 0.0183794 0.0183794 ZT8-11 0.0071461 0.0071461 0.0071461 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0