   2   3    3.016029   14.952551                                             3He
   2   4    4.002603    2.515561                                             4He
   2   5    5.012057   11.231233                                             5He
   2   6    6.018885   17.592095                                             6He
   2   7    7.027990   26.073126                                             7He
   2   8    8.033934   31.609681                                             8He
   2   9    9.043946   40.935896                                             9He
   2  10   10.052788   49.172316                                            10He
