   2   3    3.016029   14.952475                                             3He
   2   4    4.002603    2.515565                                             4He
   2   5    5.012223   11.386233                                             5He
   2   6    6.018889   17.595106                                             6He
   2   7    7.028020   26.101038                                             7He
   2   8    8.033921   31.598044                                             8He
   2   9    9.043950   40.939429                                             9He
   2  10   10.052398   48.809203                                            10He
