IDL> print, [mass_points, mf_points, mf_error]
      7.48980    0.0327944    0.0115254
      7.61225    0.0748767    0.0251771
      7.73469    0.0756796    0.0241978
      7.85714    0.0411328    0.0155465
      7.97959    0.0754211    0.0179399
      8.10204    0.0629690    0.0169421
      8.22449    0.0632424    0.0177860
      8.34694    0.0629777    0.0148224
      8.46939    0.0617884   0.00919052
      8.59184    0.0488406   0.00912303
      8.71429    0.0373191   0.00507392
      8.83673    0.0367175   0.00345630
      8.95918    0.0326738   0.00286759
      9.08163    0.0401299   0.00381169
      9.20408    0.0380100   0.00382040
      9.32653    0.0347280   0.00218399
      9.44898    0.0296694   0.00212078
      9.57143    0.0273758   0.00149546
      9.69388    0.0247872   0.00129821
      9.81633    0.0242011   0.00111468
      9.93878    0.0218386  0.000709138
      10.0612    0.0195494  0.000955437
      10.1837    0.0179089  0.000406569
      10.3061    0.0165243  0.000404797
      10.4286    0.0150767  0.000276546
      10.5510    0.0132291  0.000252791
      10.6735    0.0111267  0.000157898
      10.7959   0.00863139  0.000161130
      10.9184   0.00597131  0.000105420
      11.0408   0.00382644  9.81123e-05
      11.1633   0.00217414  7.44576e-05
      11.2857   0.00105827  4.42597e-05
      11.4082  0.000470682  2.40572e-05
      11.5306  0.000176789  8.92424e-06
      11.6531  6.44065e-05  6.11563e-06
      11.7755  1.65784e-05  1.46587e-06
      11.8980  6.59601e-06  1.04489e-06
      12.0204  5.09457e-06  2.26169e-06