condition mean min max ZT0-3 1759.55 1759.55 1759.55 ZT4-7 1539.3 1539.3 1539.3 ZT8-11 1582.9 1582.9 1582.9 ZT12-15 1631.35 1631.35 1631.35 ZT16-19 1591.65 1591.65 1591.65 ZT20-23 1540.1999999999998 1540.1999999999998 1540.1999999999998