condition mean min max ZT0-3 1961.45 1961.45 1961.45 ZT4-7 2164.3 2164.3 2164.3 ZT8-11 2152.95 2152.95 2152.95 ZT12-15 2051.7 2051.7 2051.7 ZT16-19 2165.3 2165.3 2165.3 ZT20-23 2199.1 2199.1 2199.1