condition mean min max ZT0-3 0.476087 0.3444155 0.6077585 ZT4-7 0.3481645 0.3481645 0.3481645 ZT8-11 0.904346 0.904346 0.904346 ZT12-15 0 0 0 ZT16-19 0.339112 0.339112 0.339112 ZT20-23 0.6125555 0.6125555 0.6125555