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Table 3.
Results of Spearman’s correlation test of the ratio between SDSS 2006 and 2012 spectra.
| BAL component | Ions | ρ | p-value |
|---|---|---|---|
| (1) | (2) | (3) | (4) |
| A | CIV–NV | 0.38 | 1.2 × 10−4 |
| CIV–Lyα | 0.44 | 5.3 × 10−6 | |
| CIV–SiIV | 0.29 | 3.5 × 10−3 | |
| B | CIV–NV | 0.12 | 0.30 |
| CIV–Lyα | −0.21 | 0.07 | |
| CIV–SiIV | 0.18 | 0.11 | |
| C | CIV–NV | 0.58 | 1.0 × 10−8 |
| CIV–Lyα | 0.39 | 4.1 × 10−4 | |
| CIV–SiIV | −0.14 | 0.21 |
Notes. (1) Component of the BAL UFO, (2) spectral ratio comparison between different ions, (3) Spearman rank, and (4) significance level.
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