condition mean min max ZT0-3 796.25 796.25 796.25 ZT4-7 252.2 252.2 252.2 ZT8-11 648.35 648.35 648.35 ZT12-15 613.7 613.7 613.7 ZT16-19 650.95 650.95 650.95 ZT20-23 730.35 730.35 730.35