condition mean min max ZT0-3 375.85 375.85 375.85 ZT4-7 454.0 454.0 454.0 ZT8-11 383.55 383.55 383.55 ZT12-15 379.75 379.75 379.75 ZT16-19 350.65 350.65 350.65 ZT20-23 311.95 311.95 311.95