condition mean min max ZT0-3 55.0 55.0 55.0 ZT4-7 95.0 95.0 95.0 ZT8-11 79.0 79.0 79.0 ZT12-15 80.9 80.9 80.9 ZT16-19 79.9 79.9 79.9 ZT20-23 75.0 75.0 75.0