condition mean min max ZT0-3 78.5009 78.5009 78.5009 ZT4-7 76.56 76.56 76.56 ZT8-11 42.27225 42.27225 42.27225 ZT12-15 43.28815 43.28815 43.28815 ZT16-19 50.890299999999996 50.890299999999996 50.890299999999996 ZT20-23 66.48249999999999 66.48249999999999 66.48249999999999