condition mean min max ZT0-3 102.934691 102.934691 102.934691 ZT4-7 79.1946735 79.1946735 79.1946735 ZT8-11 77.5103655 77.5103655 77.5103655 ZT12-15 90.0619825 90.0619825 90.0619825 ZT16-19 120.630548 120.630548 120.630548 ZT20-23 121.6724965 121.6724965 121.6724965