# energy_low(keV)  energy_high(keV)  fractional_rms  fractional_rms_error
     0.300000          0.460000         0.0771376        0.00201710    
     0.460000          0.700000         0.0908810        0.00176181    
     0.700000           1.00000         0.0939162        0.00231749    
      1.00000           1.54000          0.101110        0.00234956    
      1.54000           2.40000          0.104131        0.00279721    
      2.40000           4.80000         0.0937450        0.00413740    
      4.80000           10.0000         0.0924577        0.00619747