|- - peak - -|   | - - - fit - - - - - - |                ROI
  Energy  counts   Energy    FWHM,error(eV)      E/dE    counts      acf     acf_err
 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 0.726761    20   0.726684   0.496   0.093      1464.6     116    0.092747  0.020197  
 0.738517    14   0.738633   0.579   0.089      1275.4      65    0.138462  0.038698  
 0.811720    16   0.811935   0.609   0.112      1333.9      93    0.084056  0.021520  
 0.825184    30   0.825404   0.731   0.069      1128.5     160    0.106797  0.020274  
 0.872491    13   0.872287   1.037   0.176       840.8     101    0.067346  0.015847  
 0.921458    11   0.920991   1.590   0.590       579.4     129    0.044649  0.008946  
 1.01058     13   1.00988    2.969   0.678       340.1     100    0.070600  0.016473  
 1.02205     32   1.02160    1.451   0.119       703.9     180    0.105741  0.018144  
 1.07478     10   1.07447    2.943   1.053       365.1      69    0.056501  0.016955  
 1.32996     16   1.33031    1.689   0.260       787.4     124    0.062955  0.013802  
 1.35154     27   1.35147    1.329   0.138      1017.3     158    0.093975  0.018764  
 1.47147     22   1.47133    2.650   0.303       555.3     118    0.104999  0.022893  
 1.83831     22   1.83813    2.431   0.309       756.1     141    0.090589  0.018477  
 1.86401     16   1.86358    3.050   0.439       610.9     121    0.084352  0.018911