condition mean min max ZT0-3 0.1302948365 0.0 0.260589673 ZT4-7 0.80689963175 0.5510559895 1.062743274 ZT8-11 0.60774769225 0.5638394055 0.651655979 ZT12-15 0.2681173955 0.0518820045 0.4843527865 ZT16-19 0.0 0.0 0.0 ZT20-23 0.08911795125000001 0.07843911 0.09979679250000001