condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0085577 0.0085577 0.0085577 ZT12-15 0.011528533333333334 0.011528533333333334 0.011528533333333334 ZT16-19 0.008826249999999999 0.008826249999999999 0.008826249999999999 ZT20-23 0.0 0.0 0.0