condition mean min max ZT0-3 111.85 111.85 111.85 ZT4-7 103.8 103.8 103.8 ZT8-11 92.85 92.85 92.85 ZT12-15 61.599999999999994 61.599999999999994 61.599999999999994 ZT16-19 116.75 116.75 116.75 ZT20-23 105.94999999999999 105.94999999999999 105.94999999999999