condition mean min max ZT0-3 75.55 75.55 75.55 ZT4-7 35.8 35.8 35.8 ZT8-11 49.65 49.65 49.65 ZT12-15 79.3 79.3 79.3 ZT16-19 77.65 77.65 77.65 ZT20-23 64.9 64.9 64.9