condition mean min max ZT0-3 0.5061171125 0.22006057 0.792173655 ZT4-7 3.22394336375 1.9478400599999999 4.5000466675 ZT8-11 2.8260841525 1.5235757175 4.1285925875 ZT12-15 0.1973540555 0.0981831015 0.2965250095 ZT16-19 0.04546197775 0.039869733 0.0510542225 ZT20-23 0.07229290475 0.035076889 0.1095089205