condition mean min max ZT0-3 104.77052 104.77052 104.77052 ZT4-7 89.26864499999999 89.26864499999999 89.26864499999999 ZT8-11 92.928698 92.928698 92.928698 ZT12-15 109.1532755 109.1532755 109.1532755 ZT16-19 115.1517075 115.1517075 115.1517075 ZT20-23 108.7107365 108.7107365 108.7107365