condition mean min max ZT0-3 273.1 273.1 273.1 ZT4-7 231.5 231.5 231.5 ZT8-11 295.65 295.65 295.65 ZT12-15 351.15 351.15 351.15 ZT16-19 376.85 376.85 376.85 ZT20-23 240.25 240.25 240.25