condition mean min max ZT0-3 1106.45 1106.45 1106.45 ZT4-7 961.4 961.4 961.4 ZT8-11 775.75 775.75 775.75 ZT12-15 859.3 859.3 859.3 ZT16-19 920.25 920.25 920.25 ZT20-23 979.55 979.55 979.55