Table 5
Basic statistics of the multiwavelength catalogues.
| Rank | Explanation | XXL-N | XXL-S |
|---|---|---|---|
| All | Distinct X-ray sources | 14 168 | 11 888 |
| Primary counterparts | |||
| 0.0 | Physically single | 77 | 57 |
| 0.1 | Logically single | 3462 | 2789 |
| 0.2 | “Recovered” bad | 764 | 468 |
| 0.4 | “Blank field” | 18 | 21 |
| 0.9 | Definite primary | 4138 | 3768 |
| 1.0 | Marginal primary | 5709 | 4785 |
| Secondaries | |||
| 2.1 | Marginal secondary | 5709 | 4785 |
| 2.2 | Any other secondary | 11 708 | 10 850 |
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