BL vs X Errors for Errors for run 4
   Meas #     X       Field    Relative Error    Max Error Level 
     4     -20.0     -0.0698      -0.00039          0.0003    
     5     -15.0     -0.0702      -0.00053          0.0003    
     8       0.0     -0.0704      -0.00033          0.0003    
    15      35.0     -0.0633      -0.00032          0.0003