condition mean min max ZT0-3 45.38628333333333 41.33475 52.6151 ZT4-7 42.85995 42.85995 42.85995 ZT8-11 42.50745 42.50745 42.50745 ZT12-15 68.46504999999999 68.4337 68.4964 ZT16-19 51.33275 51.33275 51.33275 ZT20-23 53.8625 53.8625 53.8625