condition mean min max ZT0-3 129.25 129.25 129.25 ZT4-7 124.0 124.0 124.0 ZT8-11 113.45 113.45 113.45 ZT12-15 103.45 103.45 103.45 ZT16-19 142.6 142.6 142.6 ZT20-23 152.9 152.9 152.9