condition mean min max ZT0-3 37.209172370000005 36.91631297 37.50203177 ZT4-7 36.869114735 35.78699629 37.95123318 ZT8-11 38.66686184666666 38.48757942333333 38.846144269999996 ZT12-15 39.981671641666665 36.84621972 43.11712356333334 ZT16-19 42.359583655 41.90418998 42.814977330000005 ZT20-23 42.032112485 41.982185103333336 42.08203986666667