condition mean min max ZT0-3 1.5277805 1.419671 1.6358899999999998 ZT4-7 1.54561 1.54561 1.54561 ZT8-11 1.2616155 1.2616155 1.2616155 ZT12-15 0 0 0 ZT16-19 1.5156735 1.5156735 1.5156735 ZT20-23 1.52101 1.52101 1.52101