condition mean min max ZT0-3 0.10992675 0.0 0.2198535 ZT4-7 0.0 0.0 0.0 ZT8-11 0.221013 0.221013 0.221013 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.2958245 0.2958245 0.2958245