condition mean min max ZT0-3 81.25 81.25 81.25 ZT4-7 84.0 84.0 84.0 ZT8-11 97.7 97.7 97.7 ZT12-15 103.6 103.6 103.6 ZT16-19 103.2 103.2 103.2 ZT20-23 128.25 128.25 128.25