condition mean min max ZT0-3 512.8 512.8 512.8 ZT4-7 616.2 616.2 616.2 ZT8-11 641.15 641.15 641.15 ZT12-15 668.9000000000001 668.9000000000001 668.9000000000001 ZT16-19 596.3 596.3 596.3 ZT20-23 590.9000000000001 590.9000000000001 590.9000000000001