condition mean min max ZT0-3 38.66695 38.66695 38.66695 ZT4-7 32.098 32.098 32.098 ZT8-11 22.76135 22.76135 22.76135 ZT12-15 26.82915 26.82915 26.82915 ZT16-19 34.4758 34.4758 34.4758 ZT20-23 41.1041 41.1041 41.1041