&params
  field_file = 'field.table'
  every_n_th_plane = 1
  n_planes_add = 1
  n_deriv_max = 4
  m_cos = -1
  m_sin =  1, 3
  z_min = 1.900
  z_max = 1.910
  mode = 'fit'
  optimizer = 'lm'
  sym_x = 1
  sym_y = -1
  x_pos_plot = 0, 0.02, 0.05
  y_pos_plot = 0, 0.01, 0.02
/