condition mean min max ZT0-3 0.23962589125 0.11693658050000001 0.362315202 ZT4-7 0.23465224299999998 0.1008893125 0.36841517349999997 ZT8-11 0.250246184 0.1858097135 0.3146826545 ZT12-15 0.28747179349999996 0.282133723 0.292809864 ZT16-19 0.4989482775 0.39862286199999997 0.599273693 ZT20-23 0.9506974525 0.8550643575 1.0463305475