condition mean min max ZT0-3 616.2 616.2 616.2 ZT4-7 675.0 675.0 675.0 ZT8-11 654.05 654.05 654.05 ZT12-15 849.8 849.8 849.8 ZT16-19 652.75 652.75 652.75 ZT20-23 525.25 525.25 525.25