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Table A.1

Overview of the model atoms used.

Species N i N s N t
He i 27 27 27
He ii 13 13 30
C ii 22 22 22
C iii 44 100 243
C iv 59 59 64
O ii 3 3 3
O iii 79 79 115
O iv 53 53 72
O v 75 75 152
O vi 25 25 31
Ne ii 0 42 242
Ne iii 10 40 182
Ne iv 10 45 355
Ne v 10 37 166
Ne vi 10 36 202
Ne vii 10 38 182
Ne viii 24 24 47
Si iv 10 37 48
Si v 10 33 71
Si vi 20 42 132
P iv 0 36 178
P v 0 16 62
S iii 0 13 28
S iv 0 51 142
S v 0 31 98
S vi 28 28 58
Cl iv 0 40 129
Cl v 0 26 80
Cl vi 0 18 44
Cl vii 0 17 28
Ar iii 0 32 346
Ar iv 0 50 382
Ar v 0 64 376
Ar vi 0 21 81
Ar vii 0 30 72
Ar viii 0 28 52
Ca iii 0 33 110
Ca iv 0 34 193
Ca v 0 45 121
Ca vi 0 47 108
Ca vii 0 48 288
Ca viii 0 45 296
Ca ix 0 39 162
Ca x 27 27 59
Cr iv 0 29 234
Cr v 0 30 223
Cr vi 0 30 215
Mn iv 0 39 464
Mn v 0 16 80
Mn vi 0 23 181
Mn vii 0 20 203
Fe iv 51 51 294
Fe v 47 47 191
Fe vi 44 44 433
Fe vii 41 41 252
Fe viii 53 53 324
Fe ix 52 52 490
Fe x 43 43 210
Ni iv 0 36 200
Ni v 0 46 183
Ni vi 0 37 314
Ni vii 0 37 308
Ni viii 0 34 325
Ni ix 0 34 363

Notes. Ni is the number of levels that are treated with an accelerated lambda iteration. Ns is the number of superlevels, each of which may consist of a single level or multiple levels. Nt the total number of atomic levels in the model atom.

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