condition mean min max ZT0-3 1905.25 1905.25 1905.25 ZT4-7 1642.0 1642.0 1642.0 ZT8-11 1521.05 1521.05 1521.05 ZT12-15 1624.25 1624.25 1624.25 ZT16-19 1571.6 1571.6 1571.6 ZT20-23 1731.1 1731.1 1731.1