condition mean min max ZT0-3 0.44001351899999996 0.25114671699999996 0.628880321 ZT4-7 0.5975108888333334 0.49050985100000005 0.7045119266666666 ZT8-11 0.6755782255 0.638564155 0.7125922960000001 ZT12-15 0.614235678 0.572965307 0.655506049 ZT16-19 0.6670709641666667 0.61897059 0.7151713383333334 ZT20-23 0.5805336048333334 0.42692259666666665 0.734144613