condition mean min max ZT0-3 0.12022571625 0.0 0.2404514325 ZT4-7 0.31493927825 0.19079473400000002 0.4390838225 ZT8-11 0.088905338 0.0865851975 0.0912254785 ZT12-15 0.06431407275 0.0413120535 0.087316092 ZT16-19 0.01619702675 0.0 0.0323940535 ZT20-23 0.043906758750000004 0.018329787 0.06948373050000001