condition mean min max ZT0-3 44.1977 33.993249999999996 51.83265 ZT4-7 27.4267 27.4267 27.4267 ZT8-11 31.8497 31.8497 31.8497 ZT12-15 44.054649999999995 41.346199999999996 46.7631 ZT16-19 41.0898 41.0898 41.0898 ZT20-23 45.6394 45.6394 45.6394