condition mean min max ZT0-3 580.779052 580.779052 580.779052 ZT4-7 705.1644785000001 705.1644785000001 705.1644785000001 ZT8-11 745.961874 745.961874 745.961874 ZT12-15 774.320418 774.320418 774.320418 ZT16-19 920.9741799999999 920.9741799999999 920.9741799999999 ZT20-23 688.0981489999999 688.0981489999999 688.0981489999999