condition mean min max ZT0-3 10.2204410065 9.267444493 11.17343752 ZT4-7 20.905534384999996 9.0712953705 32.739773399499995 ZT8-11 17.540856511999998 11.798804694000001 23.282908329999998 ZT12-15 68.404031985 66.892365305 69.91569866500001 ZT16-19 46.3852822825 44.502491845 48.26807272 ZT20-23 71.977862175 46.037144645 97.918579705