condition mean min max ZT0-3 16.142152442500002 6.76913119 25.515173695 ZT4-7 65.563362485 49.40643215 81.72029282 ZT8-11 84.5093260125 76.454159785 92.56449223999999 ZT12-15 54.263805762500006 38.245993795000004 70.28161773000001 ZT16-19 37.4728847325 35.926179605 39.019589859999996 ZT20-23 44.403900772499995 44.299566909999996 44.508234635