condition mean min max ZT0-3 0.02215033333333333 0.0 0.066451 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0305629 0.0305629 0.0305629 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0