condition mean min max ZT0-3 212.05 212.05 212.05 ZT4-7 365.3 365.3 365.3 ZT8-11 493.25 493.25 493.25 ZT12-15 663.5 663.5 663.5 ZT16-19 376.85 376.85 376.85 ZT20-23 317.4 317.4 317.4