15  iter    data misfit       model norm              beta
       0       1.20369E+05       0.00000E+00       0.00000E+00
       1       6.01844E+04       2.14462E-01       1.16917E+05
       2       3.01009E+04       7.74780E-01       3.23175E+04
       3       1.50193E+04       1.64045E+00       1.08271E+04
       4       7.52021E+03       2.79115E+00       4.12295E+03
       5       3.75408E+03       4.19293E+00       1.73265E+03
       6       1.85569E+03       5.84262E+00       7.05172E+02
       7       9.18382E+02       7.96769E+00       2.28828E+02
       8       5.49364E+02       1.20297E+01       2.60031E+01
       9       2.90609E+02       1.61063E+01       6.50079E+00
      10       1.43202E+02       2.09909E+01       5.66721E+00
      11       1.00817E+02       2.48156E+01       1.43264E+00
      12       7.19973E+01       2.81474E+01       6.82819E-01
      13       6.92297E+01       2.60729E+01       6.67404E+00
      14       7.19969E+01       2.47618E+01       7.64528E+00
      15       7.19996E+01       2.43805E+01       7.94451E+00
 7.20000E+01 target misfit
          72 number of data