condition mean min max ZT0-3 97.70723333333333 90.4623 103.72605 ZT4-7 92.59015 92.59015 92.59015 ZT8-11 53.6357 53.6357 53.6357 ZT12-15 27.217325 26.28615 28.1485 ZT16-19 32.2783 32.2783 32.2783 ZT20-23 60.33725 60.33725 60.33725