condition mean min max ZT0-3 1507.15 1507.15 1507.15 ZT4-7 1761.5 1761.5 1761.5 ZT8-11 1750.75 1750.75 1750.75 ZT12-15 1748.35 1748.35 1748.35 ZT16-19 1656.25 1656.25 1656.25 ZT20-23 1506.1 1506.1 1506.1