condition mean min max ZT0-3 739.85 739.85 739.85 ZT4-7 540.0 540.0 540.0 ZT8-11 734.5 734.5 734.5 ZT12-15 825.3 825.3 825.3 ZT16-19 672.45 672.45 672.45 ZT20-23 794.1 794.1 794.1