# energy_low(keV)  energy_high(keV)  fractional_rms  fractional_rms_error
     0.300000          0.460000          0.134198        0.00379068    
     0.460000          0.700000          0.136120        0.00326334    
     0.700000           1.00000          0.149013        0.00330172    
      1.00000           1.54000          0.159070        0.00310370    
      1.54000           2.40000          0.166115        0.00351399    
      2.40000           4.80000          0.172484        0.00389466    
      4.80000           10.0000          0.176121        0.00515772