condition mean min max ZT0-3 135.6 135.6 135.6 ZT4-7 107.8 107.8 107.8 ZT8-11 94.85 94.85 94.85 ZT12-15 90.3 90.3 90.3 ZT16-19 95.0 95.0 95.0 ZT20-23 108.7 108.7 108.7