condition mean min max ZT0-3 62.05 62.05 62.05 ZT4-7 41.7 41.7 41.7 ZT8-11 60.3 60.3 60.3 ZT12-15 75.25 75.25 75.25 ZT16-19 78.9 78.9 78.9 ZT20-23 42.9 42.9 42.9