Mechanical to Magnetic Center Offsets.  These are the distances the stages moved from the mechanical center to the magnetic center. 
  Axis        Offset                   B Field 
               (mm)                      (G)
X	        -0.1222		         0.017 +/- 0.01
Y             0.0289		         0.065 +/- 0.03
Z	        -0.0223		        -0.011 +/- 0.03