condition mean min max ZT0-3 215.8 215.8 215.8 ZT4-7 106.5 106.5 106.5 ZT8-11 124.85 124.85 124.85 ZT12-15 118.85 118.85 118.85 ZT16-19 161.55 161.55 161.55 ZT20-23 224.7 224.7 224.7