condition mean min max ZT0-3 1.0738590000000001 1.0738590000000001 1.0738590000000001 ZT4-7 0.519097 0.519097 0.519097 ZT8-11 1.0679645 1.0679645 1.0679645 ZT12-15 1.66659 1.66659 1.66659 ZT16-19 1.948485 1.948485 1.948485 ZT20-23 1.094231 1.094231 1.094231