condition mean min max ZT0-3 519.3 519.3 519.3 ZT4-7 483.1 483.1 483.1 ZT8-11 484.9 484.9 484.9 ZT12-15 504.85 504.85 504.85 ZT16-19 517.75 517.75 517.75 ZT20-23 570.9 570.9 570.9