condition mean min max ZT0-3 106.0 106.0 106.0 ZT4-7 50.2 50.2 50.2 ZT8-11 51.7 51.7 51.7 ZT12-15 72.5 72.5 72.5 ZT16-19 124.15 124.15 124.15 ZT20-23 133.85 133.85 133.85