Percent Integrated Gradient Field Ratio for hardat.ru1 at radius 0.0175 m. 
  where Integrated Gradient Field Ratio = Sum[(abs(Bn/B2*sin(-n*theta_south_pole ))] for harmonics 3-16  

    Imag        Integrated Gradient Field Ratio 
    (A)                         %                 
  ---------     ----------------------------------  
  46.89465                    0.66241
  70.94632                    0.67160
  94.98013                    0.67046
 119.92669                    0.67058
 149.98790                    0.66977
 175.07003                    0.66945