condition mean min max ZT0-3 1926.9 1926.9 1926.9 ZT4-7 2016.3 2016.3 2016.3 ZT8-11 1956.5500000000002 1956.5500000000002 1956.5500000000002 ZT12-15 1713.65 1713.65 1713.65 ZT16-19 1869.15 1869.15 1869.15 ZT20-23 1914.85 1914.85 1914.85