CIS 1	CIS 2	CISD 1	Exp a
3 H 4	0	0	0	0
3 F 2	4115	4075	3954	4161
3 H 5	5013	5164	5169	6137
3 F 3	7822	7916	7833	8984
3 F 4	8867	8653	8314	9434
3 H 6	9697	9927	9850	11514
1 D 2	15971	15967	15435	16465
1 G 4	15307	14952	14477	16656
3 P 0	17178	17055	16471	17128
3 P 1	18994	19081	18695	19819
1 I 6	23243	23377	22340	22276
3 P 2	23069	23201	22725	24653
1 S 0	54876	48408	43893	43614 b

¹ 5f² reference space

² 5f² and 5f¹ 6d¹ reference space

^a Wyart, Kaufman and Sugar. Physica Scripta 22, 389 (1980).

^b Van Deurzen, Rajnak and Conway. J. Opt. Soc. B 1, 45 (1984).