condition mean min max ZT0-3 57.4 57.4 57.4 ZT4-7 46.6 46.6 46.6 ZT8-11 39.95 39.95 39.95 ZT12-15 89.9 89.9 89.9 ZT16-19 78.7 78.7 78.7 ZT20-23 82.85 82.85 82.85