condition mean min max ZT0-3 11.26745 11.26745 11.26745 ZT4-7 9.604614999999999 9.604614999999999 9.604614999999999 ZT8-11 16.22535 16.22535 16.22535 ZT12-15 13.69915 13.69915 13.69915 ZT16-19 16.95225 16.95225 16.95225 ZT20-23 11.24835 11.24835 11.24835