condition mean min max ZT0-3 32.05 32.05 32.05 ZT4-7 36.2 36.2 36.2 ZT8-11 35.5 35.5 35.5 ZT12-15 25.85 25.85 25.85 ZT16-19 34.55 34.55 34.55 ZT20-23 32.95 32.95 32.95