condition mean min max ZT0-3 2043.3999999999999 2043.3999999999999 2043.3999999999999 ZT4-7 2437.1 2437.1 2437.1 ZT8-11 2728.75 2728.75 2728.75 ZT12-15 2476.2 2476.2 2476.2 ZT16-19 1940.1 1940.1 1940.1 ZT20-23 1872.1999999999998 1872.1999999999998 1872.1999999999998