|- - peak - -|   | - - - fit - - - - - - |                ROI
  Energy  counts   Energy    FWHM,error(eV)      E/dE    counts      acf     acf_err
 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 0.726535    14   0.726608   0.552   0.099      1315.8     152    0.043542  0.008078  
 0.825374    28   0.825324   1.218   0.140       677.8     169    0.067960  0.012999  
 1.02172     20   1.02156    1.407   0.175       725.9     142    0.071514  0.014087  
 1.35117     11   1.35129    2.431   0.441       555.8     106    0.050730  0.011483  
 1.47125     12   1.47158    2.590   0.449       568.3     104    0.058617  0.013553  
 1.83799     12   1.83911    3.687   0.757       498.8     108    0.053498  0.012339  
 1.86195     16   1.86347    5.741   1.174       324.6     142    0.047907  0.009714