condition mean min max ZT0-3 562.4 562.4 562.4 ZT4-7 688.8 688.8 688.8 ZT8-11 876.65 876.65 876.65 ZT12-15 912.05 912.05 912.05 ZT16-19 774.45 774.45 774.45 ZT20-23 586.7 586.7 586.7