condition mean min max ZT0-3 1715.25 1715.25 1715.25 ZT4-7 1711.9 1711.9 1711.9 ZT8-11 2112.35 2112.35 2112.35 ZT12-15 1926.75 1926.75 1926.75 ZT16-19 1979.5 1979.5 1979.5 ZT20-23 2013.8000000000002 2013.8000000000002 2013.8000000000002