!energy   fraction   uncertainty
  570.4    0.0516    0.0025
 1175.0    0.0280    0.0013
 1779.6    0.0158    0.0009
 2384.3    0.0121    0.0007
 2988.9    0.0103    0.0008
 3593.5    0.0079    0.0008
 4198.2    0.0063    0.0013