condition mean min max ZT0-3 0.01860424975 0.0 0.0372084995 ZT4-7 0.10750862275 0.081577984 0.1334392615 ZT8-11 0.4350473295 0.1876128285 0.6824818305 ZT12-15 1.3624905575 1.0320823755 1.6928987395 ZT16-19 2.17216801875 1.78173724 2.5625987975 ZT20-23 3.121303756 2.9913358420000002 3.25127167