condition mean min max ZT0-3 2349.2 2349.2 2349.2 ZT4-7 1764.0 1764.0 1764.0 ZT8-11 1658.15 1658.15 1658.15 ZT12-15 1431.15 1431.15 1431.15 ZT16-19 2039.9 2039.9 2039.9 ZT20-23 2009.45 2009.45 2009.45