condition mean min max ZT0-3 106.0 106.0 106.0 ZT4-7 26.8 26.8 26.8 ZT8-11 65.45 65.45 65.45 ZT12-15 26.7 26.7 26.7 ZT16-19 71.2 71.2 71.2 ZT20-23 55.75 55.75 55.75