condition mean min max ZT0-3 143.44293342499998 134.0011685 152.88469834999998 ZT4-7 114.9350023975 108.69353347 121.176471325 ZT8-11 110.439556775 107.16069425 113.7184193 ZT12-15 73.037369605 62.285329559999994 83.78940965 ZT16-19 102.93044322749999 96.308255745 109.55263070999999 ZT20-23 126.731145475 121.07603040000001 132.38626055