|- - peak - -|   | - - - fit - - - - - - |                ROI
  Energy  counts   Energy    FWHM,error(eV)      E/dE    counts      acf     acf_err
 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 0.826641    16   0.826703   0.658   0.077      1257.0     148    0.064007  0.011807  
 1.02262     14   1.02277    1.271   0.149       804.8     184    0.045605  0.007374  
 1.35365     13   1.35386    1.539   0.228       879.4     125    0.052928  0.010924  
 1.84158     10   1.84111    2.154   0.485       854.9      63    0.085916  0.024794  
 1.86598     11   1.86697    2.444   0.577       763.9      72    0.079090  0.022522