condition mean min max ZT0-3 79.95 79.95 79.95 ZT4-7 116.1 116.1 116.1 ZT8-11 151.15 151.15 151.15 ZT12-15 125.4 125.4 125.4 ZT16-19 104.8 104.8 104.8 ZT20-23 82.7 82.7 82.7