condition mean min max ZT0-3 353.7 353.7 353.7 ZT4-7 167.5 167.5 167.5 ZT8-11 205.55 205.55 205.55 ZT12-15 255.85 255.85 255.85 ZT16-19 312.25 312.25 312.25 ZT20-23 449.70000000000005 449.70000000000005 449.70000000000005