condition mean min max ZT0-3 529.45 529.45 529.45 ZT4-7 613.1 613.1 613.1 ZT8-11 624.6500000000001 624.6500000000001 624.6500000000001 ZT12-15 640.35 640.35 640.35 ZT16-19 628.05 628.05 628.05 ZT20-23 645.1500000000001 645.1500000000001 645.1500000000001