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Table 4
WMAP Ka-band source counts in the flux density range 2−20 Jy.
| Year | Nsrc | κ [Jy-1 sr-1] | β | |
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| WMAP1 | 86 | 41 ± 12 | −2.7 ± 0.2 | |
| WMAP2 | 78 | 29 ± 9 | −2.5 ± 0.2 | |
| WMAP3 | 81 | 25 ± 8 | −2.4 ± 0.2 | |
| WMAP4 | 79 | 25 ± 8 | −2.4 ± 0.2 | |
| WMAP5 | 78 | 37 ± 12 | −2.7 ± 0.3 | |
| WMAP6 | 73 | 36 ± 12 | −2.8 ± 0.3 | |
| WMAP7 | 84 | 36 ± 14 | −2.7 ± 0.3 | |
| ERCSCa | 75 | 43 ± 16 | −2.9 ± 0.3 | |
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