condition mean min max ZT0-3 95.95 95.95 95.95 ZT4-7 66.0 66.0 66.0 ZT8-11 54.7 54.7 54.7 ZT12-15 75.3 75.3 75.3 ZT16-19 63.45 63.45 63.45 ZT20-23 86.5 86.5 86.5