condition mean min max ZT0-3 0.030237166666666666 0.0 0.0907115 ZT4-7 0.04438015 0.04438015 0.04438015 ZT8-11 0.0 0.0 0.0 ZT12-15 0.12669475 0.0 0.2533895 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0