condition mean min max ZT0-3 88.85 88.85 88.85 ZT4-7 93.7 93.7 93.7 ZT8-11 75.5 75.5 75.5 ZT12-15 79.55 79.55 79.55 ZT16-19 82.6 82.6 82.6 ZT20-23 101.2 101.2 101.2