condition mean min max ZT0-3 160.0 160.0 160.0 ZT4-7 150.6 150.6 150.6 ZT8-11 103.35 103.35 103.35 ZT12-15 141.05 141.05 141.05 ZT16-19 130.25 130.25 130.25 ZT20-23 144.75 144.75 144.75