condition mean min max ZT0-3 745.2 745.2 745.2 ZT4-7 1213.5 1213.5 1213.5 ZT8-11 1122.35 1122.35 1122.35 ZT12-15 673.75 673.75 673.75 ZT16-19 514.0 514.0 514.0 ZT20-23 498.59999999999997 498.59999999999997 498.59999999999997