condition mean min max ZT0-3 4573.41959 4573.41959 4573.41959 ZT4-7 4203.293607 4203.293607 4203.293607 ZT8-11 4472.6018485 4472.6018485 4472.6018485 ZT12-15 4582.350032 4582.350032 4582.350032 ZT16-19 3920.112945 3920.112945 3920.112945 ZT20-23 3682.6733885 3682.6733885 3682.6733885