condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.007413224666666666 0.0 0.014826449333333332 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0073378695 0.0 0.014675739 ZT20-23 0.0 0.0 0.0