condition mean min max ZT0-3 82.3 82.3 82.3 ZT4-7 58.8 58.8 58.8 ZT8-11 33.55 33.55 33.55 ZT12-15 34.95 34.95 34.95 ZT16-19 46.85 46.85 46.85 ZT20-23 93.0 93.0 93.0