.5         0.                3s2 3p 2P                3s2 3p 2P                 
   1.5      9696.                3s2 3p 2P                3s2 3p 2P                 
   1.5    453640.   +X           3p3 4S                   3p3 4S                    
   1.5   1118400.   +X           3s3p4s 4P                3s3p4s 4P                 
   2.5   1124300.   +X           3s3p4s 4P                3s3p4s 4P                 
   2.5   1215300.                3s2 4f 2F                3s2 4f 2F                 
   3.5   1215500.                3s2 4f 2F                3s2 4f 2F