condition mean min max ZT0-3 29.985750000000003 29.985750000000003 29.985750000000003 ZT4-7 22.0502 22.0502 22.0502 ZT8-11 31.7892 31.7892 31.7892 ZT12-15 21.325275 21.325275 21.325275 ZT16-19 46.00765 46.00765 46.00765 ZT20-23 33.1421 33.1421 33.1421