condition mean min max ZT0-3 234.10399999999998 234.10399999999998 234.10399999999998 ZT4-7 226.7275 226.7275 226.7275 ZT8-11 211.8895 211.8895 211.8895 ZT12-15 137.91500000000002 137.91500000000002 137.91500000000002 ZT16-19 148.16433333333333 148.16433333333333 148.16433333333333 ZT20-23 164.82500000000002 164.82500000000002 164.82500000000002