condition mean min max ZT0-3 71.45 71.45 71.45 ZT4-7 103.7 103.7 103.7 ZT8-11 144.3 144.3 144.3 ZT12-15 150.8 150.8 150.8 ZT16-19 121.95 121.95 121.95 ZT20-23 85.0 85.0 85.0