condition mean min max ZT0-3 0.07623978333333334 0.03797595 0.121612 ZT4-7 0.0372252 0.0372252 0.0372252 ZT8-11 1.09605 1.09605 1.09605 ZT12-15 0.89265875 0.557588 1.2277295 ZT16-19 0.10237484999999999 0.10237484999999999 0.10237484999999999 ZT20-23 0.0427142 0.0427142 0.0427142