H I

465 levels, energy levels from NIST per 2009 (J11). Normally 210 levels (n=1-20) are used. No issues with HI as energy levels are easily calculable.

HeI

29 levels, from NIST per 2007 (J11).

HeII

2 levels (303 A), from NIST per 2010. HeII omitted in table A1 in J11.

C I

91 levels, from NIST 2011 (J11).

C II

77 levels, from NIST 2011 (J11).

C III

2 levels (1907 A), from NIST 2011. Ion not listed in any paper.

N I

69 levels from NIST 2011 (J11).

N II

148 levels from NIST 2011 (J11).

N III

Not included.

O I

135 levels from NIST 2011 (J11).

O II

16 levels from NIST 2011 (J11).

O III

Not included.

Ne I

5 levels (to 135,888), energy levels from NIST per 2009 (J11).

Ne II

3 levels (to 217,047) from NIST per 2008 (J11).

Ne III

Not included.

Na I

66 levels from NIST (J11).

Na II

2 levels (376 A), from NIST (not listed anywhere).

Na III

Not included.

Mg I

371 levels from Kurucz CD23 (J11). Models usully run with first 200 levels.

Mg II

35 levels (to 110,207) from NIST (J11).

Mg III

Not included.

Si I

494 levels, energy levels from Kurucz CD 23 (J11). Models usually run with first 200 levels.

Si II

77 levels (to 125,033) from NIST (J11).

Si III

2 levels (1892 A) from NIST. Not listed.

S I

123 levels (to 81,836), from Kurucz CD 23 (J11).

S II

5 levels (to 24,571) from NIST (J11).

S III

Not included.

Ar I

3 levels (to 93,750, gives 1066 A line) from NIST (J11).

Ar II

2 levels (to 1431, gives 6.98 mu line) from NIST (J11).

Ar III

3 levels (to 1570, gives 8.99 and 21.8 mu lines) from NIST. Not listed.

Ca I

198 levels (to 48,830) from Kurucz CD 23 (J11).

Ca II

69 levels from NIST (J11).

Ca III

Not included.

Sc I

254 levels from Kurucz CD 23 (J11)

Sc II

165 levels from Kurucz CD 23 (J11)

Sc III

Not included.

Ti I

394 levels from Kurucz CD 23 (J11).

Ti II

212 levels from Kurucz CD 23 (J11).

Ti III

179 levels from Kurucz CD 23. Not listed.

V I

502 levels from Kuruxs CD 23 (J11). Normally 300 levels used.

V II

323 levels from Kurucz CD 23 (J11). Normally 300 levels used.

V III

Not included.

Cr I

392 levels from Kurucz CD 23 (J11). Normally 300 levels used.

Cr II

500 levels from Kurucz CD 23 (J11). Normally 300 levels used.

Cr III

Not included.

Mn I

293 levels from Kurucz CD 23 (J11).

Mn II

509 levels from Kurucz CD 23 (J11).

Mn III

Not included.

Fe I

496 levels from Kurucz CD 23 (J11).

Fe II

578 levels, energy levels from NIST per 2010 (J11). The current NIST listing is updated with data from a 2013 paper, the 2010 source is currently unclear.

Fe III

168 levels from kurucz.harvard.edu/atoms.html (J12)

Co I

317 levels from Kurucz CD 23 (J11).

Co II

108 levels from Kurucz CD 23 (J11).

Co III

306 levels, energy levels from kurucz.harvard.edu/atoms.html (J12)

Ni I

136 levels from NIST (J11).

Ni II

500 levels, energy levels from Kurucz CD 23 (J11).

Ni III

8 levels (to 23,108) from NIST (J15a, Sugar & Corliss 1985)