condition mean min max ZT0-3 5772.1 5772.1 5772.1 ZT4-7 6714.1 6714.1 6714.1 ZT8-11 6385.9 6385.9 6385.9 ZT12-15 5435.3 5435.3 5435.3 ZT16-19 5643.4 5643.4 5643.4 ZT20-23 5338.299999999999 5338.299999999999 5338.299999999999