condition mean min max ZT0-3 2274.45 2274.45 2274.45 ZT4-7 1926.6 1926.6 1926.6 ZT8-11 2004.1 2004.1 2004.1 ZT12-15 1963.3000000000002 1963.3000000000002 1963.3000000000002 ZT16-19 2139.9 2139.9 2139.9 ZT20-23 2399.0 2399.0 2399.0