condition mean min max ZT0-3 146.616672 146.616672 146.616672 ZT4-7 263.224421 263.224421 263.224421 ZT8-11 368.969099 368.969099 368.969099 ZT12-15 342.91242850000003 342.91242850000003 342.91242850000003 ZT16-19 357.791443 357.791443 357.791443 ZT20-23 376.192984 376.192984 376.192984