condition mean min max ZT0-3 1466.45 1466.45 1466.45 ZT4-7 1666.5 1666.5 1666.5 ZT8-11 1611.6 1611.6 1611.6 ZT12-15 1579.1 1579.1 1579.1 ZT16-19 1569.15 1569.15 1569.15 ZT20-23 1519.25 1519.25 1519.25