condition mean min max ZT0-3 82.95 82.95 82.95 ZT4-7 40.2 40.2 40.2 ZT8-11 75.3 75.3 75.3 ZT12-15 51.599999999999994 51.599999999999994 51.599999999999994 ZT16-19 66.2 66.2 66.2 ZT20-23 67.0 67.0 67.0