condition mean min max ZT0-3 96.75 96.75 96.75 ZT4-7 70.8 70.8 70.8 ZT8-11 85.9 85.9 85.9 ZT12-15 44.6 44.6 44.6 ZT16-19 45.599999999999994 45.599999999999994 45.599999999999994 ZT20-23 56.05 56.05 56.05