condition mean min max ZT0-3 59.05 59.05 59.05 ZT4-7 91.6 91.6 91.6 ZT8-11 65.4 65.4 65.4 ZT12-15 114.1 114.1 114.1 ZT16-19 92.85 92.85 92.85 ZT20-23 59.35 59.35 59.35