|- - peak - -|   | - - - fit - - - - - - |                ROI
  Energy  counts   Energy    FWHM,error(eV)      E/dE    counts      acf     acf_err
 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 0.965829    10   0.965863   0.503   0.172      1919.7      86    0.047864  0.012486  
 1.00880     12   1.00867    0.848   0.131      1189.0     122    0.055899  0.011370  
 1.02179     23   1.02178    0.799   0.082      1279.2     154    0.078850  0.014465  
 1.47160     12   1.47197    2.343   0.328       628.3     119    0.059530  0.012023  
 1.86422     13   1.86417    2.673   0.440       697.4      87    0.082574  0.019797  
 2.00678     10   2.00561    4.294   0.955       467.1      74    0.072681  0.019566