# energy_low(keV)  energy_high(keV)  fractional_rms  fractional_rms_error
     0.300000          0.460000          0.109008        0.00225080    
     0.460000          0.700000         0.0996220        0.00243006    
     0.700000           1.00000         0.0929510        0.00303653    
      1.00000           1.54000         0.0796191        0.00355399    
      1.54000           2.40000         0.0717625        0.00497223    
      2.40000           4.80000         0.0611603        0.00675954    
      4.80000           10.0000         0.0956947         0.0117035