condition mean min max ZT0-3 0.16195 0.0 0.48585 ZT4-7 0.4754675 0.4754675 0.4754675 ZT8-11 0.0 0.0 0.0 ZT12-15 0.2670775 0.0 0.534155 ZT16-19 0.224878 0.224878 0.224878 ZT20-23 1.05266 1.05266 1.05266