condition mean min max ZT0-3 0.6329994999999999 0.6329994999999999 0.6329994999999999 ZT4-7 0.3526585 0.3526585 0.3526585 ZT8-11 0.3142915 0.3142915 0.3142915 ZT12-15 0.2575915 0.2575915 0.2575915 ZT16-19 0.593965 0.593965 0.593965 ZT20-23 0.435797 0.435797 0.435797