|- - peak - -|   | - - - fit - - - - - - |                ROI
  Energy  counts   Energy    FWHM,error(eV)      E/dE    counts      acf     acf_err
 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 0.653059    10   0.653114   0.702   0.154       929.8     140    0.038061  0.007250  
 0.724725    17   0.724823   0.728   0.089       996.2     242    0.037976  0.005439  
 0.726358    17   0.726651   0.738   0.119       984.9     321    0.031104  0.003785  
 0.738591    15   0.738578   1.102   0.195       670.3     201    0.038737  0.006127  
 0.770998    11   0.770825   1.151   0.308       669.5     136    0.036657  0.007247  
 0.774402    13   0.774179   0.810   0.160       955.5     127    0.043958  0.009184  
 0.811814    14   0.811900   1.337   0.299       607.1     222    0.032911  0.005029  
 0.825623    30   0.825346   1.166   0.089       707.8     532    0.034160  0.003258  
 0.872146    20   0.872214   1.444   0.204       604.2     258    0.035725  0.005037  
 0.916096    10   0.916511   1.670   0.379       548.7     208    0.029216  0.004391  
 0.921076    13   0.920873   1.447   0.355       636.5     200    0.030850  0.004941  
 1.01044     12   1.00983    3.433   1.207       294.2     180    0.030185  0.004948  
 1.02106     29   1.02127    1.796   0.171       568.5     409    0.034965  0.003864  
 1.33008     12   1.32996    2.301   0.356       578.0     189    0.035861  0.005826  
 1.35092     17   1.35091    3.351   0.453       403.1     297    0.031845  0.004048  
 1.47183     12   1.47097    3.642   0.533       403.9     191    0.037252  0.005866  
 1.83620     13   1.83761    6.782   1.226       270.9     198    0.034078  0.005349  
 1.86115     15   1.86290    4.368   0.634       426.5     260    0.032367  0.004521