condition mean min max ZT0-3 1396.8 1396.8 1396.8 ZT4-7 1494.7 1494.7 1494.7 ZT8-11 1910.25 1910.25 1910.25 ZT12-15 2082.3 2082.3 2082.3 ZT16-19 1438.5 1438.5 1438.5 ZT20-23 1318.6 1318.6 1318.6