condition mean min max ZT0-3 180.1 180.1 180.1 ZT4-7 102.0 102.0 102.0 ZT8-11 67.7 67.7 67.7 ZT12-15 109.15 109.15 109.15 ZT16-19 126.7 126.7 126.7 ZT20-23 138.2 138.2 138.2