condition mean min max ZT0-3 17.16829 17.16829 17.16829 ZT4-7 13.509846499999998 13.509846499999998 13.509846499999998 ZT8-11 13.994979 13.994979 13.994979 ZT12-15 14.533375 14.533375 14.533375 ZT16-19 14.1889945 14.1889945 14.1889945 ZT20-23 13.7549615 13.7549615 13.7549615