Table 1
Summary of investigated surveys.
| Survey | Area | 3.6 μm limit | 20 cm limit | IFRS |
| Name | deg2 | μJy | μJy | number |
|
|
||||
| ATLAS/CDF-Sa | 3.7 | 3.1 | 186 | 14 |
| ATLAS/ELAIS-S1a | 3.6 | 3.1 | 160 | 15 |
| First Look Surveyb | 3.1 | 9.0 | 105 | 13 |
| COSMOSc | 1.1 | 1.0 | 65 | 13 |
Notes. The given sensitivity limits are all 5σ.
Radio from Norris et al. (2006) and Middelberg et al. (2008a), IR from Lonsdale et al. (2003).
Radio from Condon et al. (2003) and IR from Lacy et al. (2005).
Radio from Schinnerer et al. (2007) (only the inner part of the 20 cm map was searched for IFRS to assure a homogeneous noise level across the searched area) and IR from Sanders et al. (2007).
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