condition mean min max ZT0-3 178.80191666666667 74.93674999999999 266.4155 ZT4-7 23.20765 23.20765 23.20765 ZT8-11 20.02255 20.02255 20.02255 ZT12-15 28.3855 19.2569 37.5141 ZT16-19 45.23475 45.23475 45.23475 ZT20-23 97.16585 97.16585 97.16585