condition mean min max ZT0-3 1930.5 1930.5 1930.5 ZT4-7 1635.1 1635.1 1635.1 ZT8-11 1682.05 1682.05 1682.05 ZT12-15 1662.5 1662.5 1662.5 ZT16-19 1820.0 1820.0 1820.0 ZT20-23 1978.65 1978.65 1978.65