|- - peak - -|   | - - - fit - - - - - - |                ROI
  Energy  counts   Energy    FWHM,error(eV)      E/dE    counts      acf     acf_err
 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 0.650177    24   0.650123   0.255   0.027      2553.7      84    0.219388  0.050259  
 0.696753    30   0.696819   0.292   0.027      2385.4     109    0.223466  0.043904  
 1.48558    127   1.48760  * 19.252  2.084        77.3    3163    0.024863  0.000926  
 1.49760     51   1.48860  * 15.634  1.356        95.2    2021    0.030836  0.001470  
 1.50981     10   1.51606  * 90.027  25.081       16.8     371    0.036246  0.004493