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Table 2
Line ratios in the optically thin limit.
| Lines | Observed | Opt. thin | Comments |
| ratio | limit | ||
|
|
|||
| HeI 6678/5875 | 0.41 | 9e-5 | Very opt. thick |
| MnI 4034/4033 | 0.76 | 0.64 | Nearly opt. thin |
| MnI 4034/4030 | 0.72 | 0.47 | Rather opt. thick |
| MgI 5173/5184 | 0.92 | 0.59 | Rather opt. thick |
| TiII 4313/4300 | 0.53 | 0.40 | Nearly opt. thin |
| TiII 4307/4302 | 1.50 | 0.76 | Optically thick |
| TiII 4054/4028 | 0.63 | 0.63 | Opt. thin |
| TiII 4450/4443 | 1.0 | 0.18 | Opt. thick |
| TiII 4590/4572 | 0.78 | 0.15 | Rather opt. thick |
| SiII 6371/6347 | 0.63 | 0.59 | Nearly opt. thin |
| AlI 3944/3961 | 1.2 | 0.50 | Opt. thick |
| CrI 4290/4275 | 0.80 | 0.74 | Nearly opt. thin |
| CrI 4290/4254 | 0.73 | 0.57 | Nearly opt. thin |
| CrII 4617/4588 | 0.43 | 0.22 | Rather opt. thick |
| CrII 4617/4559 | 0.38 | 0.23 | Rather opt. thick |
| CrII 4876/4848 | 1.0 | 0.47 | Very weak lines |
| CrII 4876/4824 | 0.75 | 0.58 | Very weak lines |
| OI 7775/7774 | 0.88 | 0.60 | Rather opt. thick |
| OI 7775/7772 | 0.65 | 0.43 | Rather opt. thick |
| FeI 3896/3900 | 0.68 | 0.73 | Opt. thin |
| FeI 3920/3928 | 0.66 | 0.60 | Opt. thin |
| FeI 3923/3930 | 1.07 | 0.70 | Opt. thick |
| FeI 4144/4045 | 0.96 | 0.16 | Opt. thick |
| FeI 4216/4376 | 0.82 | 0.47 | Rather opt. thick |
| FeI 5329/5172 | 0.80 | 0.88 | Contaminated by Mg I |
| FeI 5456/5406 | 0.82 | 0.57 | Rather opt. thick |
| FeII 4576/4351 | 0.30 | 0.15 | Rather opt. thick |
| FeII 4520/4549 | 0.39 | 0.13 | Rather opt. thick |
| FeII 4555/4549 | 0.68 | 0.30 | Rather opt. thick |
| FeII 4583/4576 | 0.76 | 0.72 | Opt. thin |
| FeII 4923/5018 | 1.16 | 0.73 | Opt. thick |
| FeII 5235/5198 | 1.16 | 0.70 | Opt. thick |
| FeII 6238/6248 | 0.50 | 0.47 | Nearly opt. thin |
Notes. Observed and optically thin limit line ratios from similar energy (calculated using the atomic data from the NIST database).
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