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Table 3
Abundances and depletions of silicon.
| Source |  |
Depletion | ASi |  |
ASi∕A⊙ |
|---|---|---|---|---|---|
| (1018 cm−2) | (10−5 per H atom) | (10−5 per H atom) | |||
| GX 5-1 | 1.7 ± 0.2 | 0.89 ± 0.05 | 2.9 ± 0.2 | 2.5 ± 0.2 |  |
| GX 13+1 | 1.4 ± 0.2 | 0.94 ± 0.02 | 4.6 ± 0.7 | 4.4 ± 0.7 | 1.2 ± 0.2 |
| GX 340+00 | 2.9 ± 0.6 | 0.77 ± 0.10 | 4.5 ± 0.9 | 3.6 ± 0.9 |  |
| GX 17+2 | 1.1 ± 0.2 | 0.95 ± 0.03 | 5.2 ± 0.4 | 5.1 ± 0.4 | 1.3 ± 0.1 |
| 4U 1705-44 | 0.9 ± 0.2 | 0.91 ± 0.05 | 4.3 ± 1.1 | 4.0 ± 1.1 | 1.1 ± 0.3 |
| 4U 1630-47 | 4.8 ± 1.3 |  |
4.9 ± 1.3 | 4.5 ± 1.3 | 1.3 ± 0.4 |
| 4U 1728-34 | 1.4 ± 0.4 |  |
4.1 ± 1.4 | 3.9 ± 1.4 | 1.1 ± 0.4 |
| 4U 1702-429 | 0.7 ± 0.3 | 0.93 ± 0.15 | 3.2 ± 1.5 | 3.0 ± 1.5 | 0.8 ± 0.4 |
| GRS 1758-258 | 1.0 ± 0.4 | 0.75 ± 0.2 | 3.9 ± 1.5 | 2.9 ± 1.5 | 1.0 ± 0.4 |
| Average | 1.8 ± 0.2 | 0.87 ± 0.04 | 4.0 ± 0.4 | 3.8 ± 0.4 | 1.1 ± 0.1 |
Notes. Abundances are indicated by ASi. Solar abundances are taken from Lodders & Palme (2009). 
indicates the total column density of silicon (gas and dust).
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