condition mean min max ZT0-3 581.2 581.2 581.2 ZT4-7 1390.3 1390.3 1390.3 ZT8-11 1117.9 1117.9 1117.9 ZT12-15 849.5 849.5 849.5 ZT16-19 703.2 703.2 703.2 ZT20-23 843.15 843.15 843.15