condition mean min max ZT0-3 1324.3 1324.3 1324.3 ZT4-7 1524.2 1524.2 1524.2 ZT8-11 1635.25 1635.25 1635.25 ZT12-15 1730.2 1730.2 1730.2 ZT16-19 1450.5 1450.5 1450.5 ZT20-23 1401.75 1401.75 1401.75