condition mean min max ZT0-3 0.0365092405 0.0 0.073018481 ZT4-7 0.06630775625 0.023872911 0.10874260150000001 ZT8-11 0.7000549847499999 0.375638308 1.0244716615 ZT12-15 1.4459997255 1.1620202805000002 1.7299791705 ZT16-19 1.50288954575 1.350601627 1.6551774645000001 ZT20-23 1.70104304775 1.5056162275 1.896469868