condition mean min max ZT0-3 13.3359 12.37255 14.29925 ZT4-7 10.867999999999999 10.867999999999999 10.867999999999999 ZT8-11 16.5015 16.5015 16.5015 ZT12-15 0 0 0 ZT16-19 17.32295 17.32295 17.32295 ZT20-23 14.45985 14.45985 14.45985