condition mean min max ZT0-3 0.30148425 0.252967 0.35000149999999997 ZT4-7 0.5531195 0.5531195 0.5531195 ZT8-11 1.78182 1.78182 1.78182 ZT12-15 0 0 0 ZT16-19 1.441995 1.441995 1.441995 ZT20-23 0.6997855 0.6997855 0.6997855