condition mean min max ZT0-3 103.6 103.6 103.6 ZT4-7 50.4 50.4 50.4 ZT8-11 26.4 26.4 26.4 ZT12-15 49.05 49.05 49.05 ZT16-19 58.3 58.3 58.3 ZT20-23 99.65 99.65 99.65