condition mean min max ZT0-3 0.1656495 0.0 0.331299 ZT4-7 1.879595 1.879595 1.879595 ZT8-11 0.165912 0.165912 0.165912 ZT12-15 0 0 0 ZT16-19 0.9914615 0.9914615 0.9914615 ZT20-23 0.3331085 0.3331085 0.3331085