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	        -0.0422		        -0.11 +/- 0.01
Y             0.0040		         0.08 +/- 0.01
Z	        -0.0195		        -0.01 +/- 0.02