condition mean min max ZT0-3 25.85 25.85 25.85 ZT4-7 44.3 44.3 44.3 ZT8-11 28.75 28.75 28.75 ZT12-15 83.35 83.35 83.35 ZT16-19 48.5 48.5 48.5 ZT20-23 78.2 78.2 78.2