condition mean min max ZT0-3 0.015088825 0.0 0.03017765 ZT4-7 0.0297935 0.0297935 0.0297935 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0297612 0.0297612 0.0297612