condition mean min max ZT0-3 1890.25 1890.25 1890.25 ZT4-7 1773.7 1773.7 1773.7 ZT8-11 1893.55 1893.55 1893.55 ZT12-15 1871.4499999999998 1871.4499999999998 1871.4499999999998 ZT16-19 1689.65 1689.65 1689.65 ZT20-23 1734.35 1734.35 1734.35