condition mean min max ZT0-3 575.9 575.9 575.9 ZT4-7 809.6 809.6 809.6 ZT8-11 711.7 711.7 711.7 ZT12-15 734.0 734.0 734.0 ZT16-19 709.4 709.4 709.4 ZT20-23 630.85 630.85 630.85