condition mean min max ZT0-3 790.918393 790.918393 790.918393 ZT4-7 733.3984800000001 733.3984800000001 733.3984800000001 ZT8-11 571.039749 571.039749 571.039749 ZT12-15 638.539749 638.539749 638.539749 ZT16-19 524.966589 524.966589 524.966589 ZT20-23 582.0241175 582.0241175 582.0241175