.5         0.                3s2 3p 2P                3s2 3p 2P                 
   1.5     15295.                3s2 3p 2P                3s2 3p 2P                 
   1.5    524890.   +X           3p3 4S                   3p3 4S                    
   2.5   1464300.   +X           3s3p4s 4P                3s3p4s 4P                 
   2.5   1586200.                3s2 4f 2F                3s2 4f 2F                 
   3.5    628840.   +X           3s3p3d 4D                3s3p3d 4D                 
   3.5   1586400.                3s2 4f 2F                3s2 4f 2F