condition mean min max ZT0-3 0.8699915 0.8699915 0.8699915 ZT4-7 0.9003915 0.9003915 0.9003915 ZT8-11 0.876144 0.876144 0.876144 ZT12-15 0.7792905 0.7792905 0.7792905 ZT16-19 1.115934 1.115934 1.115934 ZT20-23 0.794789 0.794789 0.794789