condition mean min max ZT0-3 32.6934 28.601300000000002 36.7855 ZT4-7 38.62595 38.62595 38.62595 ZT8-11 28.207549999999998 28.207549999999998 28.207549999999998 ZT12-15 0 0 0 ZT16-19 36.8977 36.8977 36.8977 ZT20-23 36.04965 36.04965 36.04965