condition mean min max ZT0-3 114.44817352 97.68726674000001 131.20908029999998 ZT4-7 87.28716007833333 87.03891388666666 87.53540627000001 ZT8-11 110.51426642166666 103.41145234333334 117.61708049999999 ZT12-15 116.822129665 108.11210899999999 125.53215033000001 ZT16-19 108.2689824 105.10007573333333 111.43788906666666 ZT20-23 114.37898881666666 94.19002571333334 134.56795191999998