# energy_low(keV)  energy_high(keV)  fractional_rms  fractional_rms_error
     0.300000          0.460000         0.0616039        0.00487978    
     0.460000          0.700000         0.0773364        0.00509814    
     0.700000           1.00000         0.0664026        0.00637315    
      1.00000           1.54000         0.0932133        0.00692636    
      1.54000           2.40000         0.0995119        0.00981398    
      2.40000           4.80000         0.0751180         0.0132505    
      4.80000           10.0000         0.0923492         0.0248868