condition mean min max ZT0-3 209.199 209.199 209.199 ZT4-7 153.29149999999998 153.29149999999998 153.29149999999998 ZT8-11 194.585 194.585 194.585 ZT12-15 222.7955 222.7955 222.7955 ZT16-19 267.1925 267.1925 267.1925 ZT20-23 248.6995 248.6995 248.6995