condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.128812 0.128812 0.128812 ZT12-15 0.2086775 0.2086775 0.2086775 ZT16-19 0.0 0.0 0.0 ZT20-23 0.411019 0.411019 0.411019