condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.40115813766666664 0.0 0.8023162753333333 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0