condition mean min max ZT0-3 12.245899999999999 12.245899999999999 12.245899999999999 ZT4-7 10.463875 10.463875 10.463875 ZT8-11 8.91715 8.91715 8.91715 ZT12-15 7.99996 7.99996 7.99996 ZT16-19 12.764 12.764 12.764 ZT20-23 13.4941 13.4941 13.4941