condition mean min max ZT0-3 37.189752580000004 33.92986524 40.44963992 ZT4-7 36.599557185 34.27413597 38.9249784 ZT8-11 45.8133122375 40.171703945000004 51.45492053 ZT12-15 79.52504078749999 73.434524485 85.61555709 ZT16-19 88.8690523425 84.51353728500001 93.2245674 ZT20-23 68.24789558500001 59.34417985 77.15161132