|- - peak - -|   | - - - fit - - - - - - |                ROI
  Energy  counts   Energy    FWHM,error(eV)      E/dE    counts      acf     acf_err
 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 0.653551    22   0.653637   0.603   0.065      1084.3     240    0.043576  0.006379  
 0.726176    13   0.726327   0.713   0.105      1019.2     179    0.039169  0.006506  
 0.738185    13   0.738199   0.851   0.115       867.3     174    0.043797  0.007303  
 0.825798    28   0.825826   1.104   0.073       747.9     448    0.039730  0.004052  
 1.02238     21   1.02186    1.619   0.171       631.4     262    0.042597  0.005937  
 1.35250     11   1.35242    2.801   0.801       482.8      89    0.053150  0.013406