condition mean min max ZT0-3 29.2 29.2 29.2 ZT4-7 37.9 37.9 37.9 ZT8-11 24.15 24.15 24.15 ZT12-15 14.05 14.05 14.05 ZT16-19 13.9 13.9 13.9 ZT20-23 25.3 25.3 25.3