condition mean min max ZT0-3 45.6 45.6 45.6 ZT4-7 78.7 78.7 78.7 ZT8-11 84.05 84.05 84.05 ZT12-15 110.5 110.5 110.5 ZT16-19 67.25 67.25 67.25 ZT20-23 84.65 84.65 84.65