condition mean min max ZT0-3 1902.75 1902.75 1902.75 ZT4-7 1455.9 1455.9 1455.9 ZT8-11 1470.0 1470.0 1470.0 ZT12-15 1908.25 1908.25 1908.25 ZT16-19 2039.4 2039.4 2039.4 ZT20-23 1897.6 1897.6 1897.6