condition mean min max ZT0-3 73.36338169999999 71.48758713999999 75.23917626000001 ZT4-7 75.52480381666666 74.89235705 76.15725058333334 ZT8-11 82.97177078666667 74.86985645666667 91.07368511666667 ZT12-15 93.71272018833334 92.06583238333334 95.35960799333333 ZT16-19 102.14366989 99.39619665 104.89114313 ZT20-23 109.820600725 103.53474715 116.10645430000001