condition mean min max ZT0-3 1775.85 1775.85 1775.85 ZT4-7 545.9 545.9 545.9 ZT8-11 568.35 568.35 568.35 ZT12-15 994.95 994.95 994.95 ZT16-19 1432.8000000000002 1432.8000000000002 1432.8000000000002 ZT20-23 1672.4 1672.4 1672.4