condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.051114 0.051114 0.051114 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.0492679 0.0492679 0.0492679 ZT20-23 0.0996445 0.0996445 0.0996445