condition mean min max ZT0-3 0.07857115 0.07857115 0.07857115 ZT4-7 0.064291 0.064291 0.064291 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0284241 0.0284241 0.0284241 ZT20-23 0.08399945 0.08399945 0.08399945