condition mean min max ZT0-3 0.24521833333333332 0.0 0.735655 ZT4-7 0.0 0.0 0.0 ZT8-11 0.3619915 0.3619915 0.3619915 ZT12-15 0.0 0.0 0.0 ZT16-19 0.32251 0.32251 0.32251 ZT20-23 0.0 0.0 0.0