condition mean min max ZT0-3 32.27235820166666 32.19667559333333 32.34804081 ZT4-7 31.45181179833333 28.2121114 34.691512196666665 ZT8-11 36.589071430000004 30.7044187 42.47372416 ZT12-15 37.20673477 35.9115738 38.50189574 ZT16-19 33.001600255 31.394828443333335 34.60837206666667 ZT20-23 34.676972479999996 31.68628549 37.66765947