condition mean min max ZT0-3 81.94999999999999 81.94999999999999 81.94999999999999 ZT4-7 78.7 78.7 78.7 ZT8-11 114.5 114.5 114.5 ZT12-15 121.9 121.9 121.9 ZT16-19 122.25 122.25 122.25 ZT20-23 98.05 98.05 98.05