|- - peak - -|   | - - - fit - - - - - - |                ROI
  Energy  counts   Energy    FWHM,error(eV)      E/dE    counts      acf     acf_err
 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 1.44618     15   1.41102  * 10.396  25.827      135.7    1003    0.066800  0.005588  
 1.49015    437   1.48659  * 17.149  0.267        86.7    5629    0.046041  0.001394  
 1.55264     21   1.53267  * 57.277  13.573       26.8     369    0.032616  0.003652