condition mean min max ZT0-3 2102.25 2102.25 2102.25 ZT4-7 2233.3 2233.3 2233.3 ZT8-11 1889.5500000000002 1889.5500000000002 1889.5500000000002 ZT12-15 1829.5 1829.5 1829.5 ZT16-19 1892.95 1892.95 1892.95 ZT20-23 2044.85 2044.85 2044.85