condition mean min max ZT0-3 76.56676269083333 61.99403954499999 91.13948583666667 ZT4-7 85.376398845 77.83980118 92.91299651 ZT8-11 80.603868465 77.39136819 83.81636874 ZT12-15 77.78814631333333 73.63190342 81.94438920666667 ZT16-19 113.4083645 109.801264 117.015465 ZT20-23 81.24015585999999 78.30260171666666 84.17771000333333