condition mean min max ZT0-3 60.04528333333333 49.948 67.14775 ZT4-7 51.2502 51.2502 51.2502 ZT8-11 81.81195 81.81195 81.81195 ZT12-15 93.048425 87.47215 98.62469999999999 ZT16-19 77.3528 77.3528 77.3528 ZT20-23 88.52215 88.52215 88.52215