condition mean min max ZT0-3 28.803449999999998 28.803449999999998 28.803449999999998 ZT4-7 26.88065 26.88065 26.88065 ZT8-11 30.1084 30.1084 30.1084 ZT12-15 22.54585 22.54585 22.54585 ZT16-19 33.948949999999996 33.948949999999996 33.948949999999996 ZT20-23 27.63825 27.63825 27.63825