condition mean min max ZT0-3 121.1 121.1 121.1 ZT4-7 146.9 146.9 146.9 ZT8-11 80.4 80.4 80.4 ZT12-15 87.5 87.5 87.5 ZT16-19 88.65 88.65 88.65 ZT20-23 150.7 150.7 150.7