condition mean min max ZT0-3 185.5045 185.5045 185.5045 ZT4-7 74.2519 74.2519 74.2519 ZT8-11 62.2153 62.2153 62.2153 ZT12-15 172.14499999999998 172.14499999999998 172.14499999999998 ZT16-19 375.77 375.77 375.77 ZT20-23 324.586 324.586 324.586