Table 2.
Predicted S/N for the ISW signal in the ideal scenario (CIB maps free of galactic dust residuals), for 100% and 40% sky coverage.
| Freq. (GHz) | 217 | 353 | 545 | 857 | 3000 |
|---|---|---|---|---|---|
| 100% fsky | 5.25 | 5.73 | 6.12 | 6.73 | 5.01 |
| 40% fsky | 3.32 | 3.62 | 3.87 | 4.26 | 3.17 |
Notes. The best-fit frequency for the ISW detection in this case is 857 GHz, where the S/N reaches 6.73 for the full sky and 4.26 for 40% of the sky. Equation (19) shows that the S/N is directly proportional to 
and thus can be easily calculated for other sky fractions in this ideal case.
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