condition mean min max ZT0-3 1786.2 1786.2 1786.2 ZT4-7 2231.6 2231.6 2231.6 ZT8-11 1954.0 1954.0 1954.0 ZT12-15 1895.8 1895.8 1895.8 ZT16-19 1848.15 1848.15 1848.15 ZT20-23 1757.55 1757.55 1757.55