condition mean min max ZT0-3 2421.75 2421.75 2421.75 ZT4-7 2433.4 2433.4 2433.4 ZT8-11 2523.9 2523.9 2523.9 ZT12-15 2143.4 2143.4 2143.4 ZT16-19 2023.4 2023.4 2023.4 ZT20-23 2249.7 2249.7 2249.7