condition mean min max ZT0-3 136.09 136.09 136.09 ZT4-7 108.02799999999999 108.02799999999999 108.02799999999999 ZT8-11 92.34225 92.34225 92.34225 ZT12-15 102.0925 102.0925 102.0925 ZT16-19 131.1895 131.1895 131.1895 ZT20-23 147.8635 147.8635 147.8635