condition mean min max ZT0-3 34.81804931 32.67292706 36.96317156 ZT4-7 33.733709520000005 28.38956433 39.077854710000004 ZT8-11 41.654576965000004 36.598241916666666 46.710912013333335 ZT12-15 58.24639431166666 48.74674035333333 67.74604827 ZT16-19 98.41455120333333 96.07851106666666 100.75059134 ZT20-23 78.35118279 75.10624817 81.59611740999999