condition mean min max ZT0-3 16.045938829249998 6.3786464485 25.71323121 ZT4-7 14.265778677499998 13.884171055 14.647386299999999 ZT8-11 14.96639264825 13.99672486 15.9360604365 ZT12-15 19.0595538625 16.85073953 21.268368195 ZT16-19 33.13625175 26.93194762 39.34055588 ZT20-23 47.40928314 45.251718215 49.566848065