condition mean min max ZT0-3 24.5 24.5 24.5 ZT4-7 47.1945 47.1945 47.1945 ZT8-11 25.658949999999997 25.658949999999997 25.658949999999997 ZT12-15 11.364075 11.364075 11.364075 ZT16-19 10.838149999999999 10.838149999999999 10.838149999999999 ZT20-23 12.10165 12.10165 12.10165