condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.599255 0.599255 0.599255 ZT8-11 0.606765 0.606765 0.606765 ZT12-15 0.30359 0.0 0.60718 ZT16-19 0.0 0.0 0.0 ZT20-23 0.639715 0.639715 0.639715