condition mean min max ZT0-3 3246.8 3246.8 3246.8 ZT4-7 2396.1 2396.1 2396.1 ZT8-11 2319.0 2319.0 2319.0 ZT12-15 2020.6 2020.6 2020.6 ZT16-19 2160.0 2160.0 2160.0 ZT20-23 2918.5 2918.5 2918.5