condition mean min max ZT0-3 1789.5 1789.5 1789.5 ZT4-7 1626.1 1626.1 1626.1 ZT8-11 1490.7 1490.7 1490.7 ZT12-15 1359.05 1359.05 1359.05 ZT16-19 1725.25 1725.25 1725.25 ZT20-23 1902.85 1902.85 1902.85