condition mean min max ZT0-3 0.12544783333333334 0.0 0.3763435 ZT4-7 0.340599 0.340599 0.340599 ZT8-11 0.34487 0.34487 0.34487 ZT12-15 0.0 0.0 0.0 ZT16-19 0.334367 0.334367 0.334367 ZT20-23 0.377035 0.377035 0.377035