# energy_low(keV)  energy_high(keV)  fractional_rms  fractional_rms_error
     0.300000          0.460000         0.0157124        0.00197175    
     0.460000          0.700000         0.0190419        0.00184043    
     0.700000           1.00000         0.0147419        0.00203376    
      1.00000           1.54000         0.0134649        0.00186657    
      1.54000           2.40000         0.0152195        0.00204849    
      2.40000           4.80000        0.00780124        0.00272131    
      4.80000           10.0000        0.00970412        0.00362054