condition mean min max ZT0-3 121.9 121.9 121.9 ZT4-7 44.2 44.2 44.2 ZT8-11 69.05 69.05 69.05 ZT12-15 95.5 95.5 95.5 ZT16-19 62.9 62.9 62.9 ZT20-23 79.45 79.45 79.45