condition mean min max ZT0-3 80.25 80.25 80.25 ZT4-7 28.7 28.7 28.7 ZT8-11 26.65 26.65 26.65 ZT12-15 60.15 60.15 60.15 ZT16-19 76.3 76.3 76.3 ZT20-23 71.15 71.15 71.15