Table 3.
Statistical significance of the FRB periodicities.
| FRB | ncomp | Psc (ms) |
 |
 |
rχ2 | σχ2, Π | σχ2, P | σχ2, ln |
|---|---|---|---|---|---|---|---|---|
| FRB 20201020A | (0,1,2,3,4) | 0.411(6) | 4.18 | 1.41 | 11.17 | 2.50 | 2.40 | – |
| FRB 20180916B A17 | (0,1,2,3,4) | 0.95(3) | 10.47 | 3.54 | 20.33 | 1.75 | 1.78 | 1.87 |
| FRB 20180916B A53 | (0,1,2,4,5,6,7,10,12,13,14,15) | 1.7(1) | 5.12 | 0.95 | 168.3 | 1.94 | 2.29 | 2.35 |
| FRB 20210206A | (0,1,2,3,5) | 2.8 | 5.13 | 1.89 | 2027.41 | 1.90 | 1.87 | – |
| FRB 20210213A | (0,1,2,3,4,5) | 10.8 | 7.42 | 2.56 | 270.80 | 2.96 | 2.77 | – |
Notes. Values computed for the FRBs presented in this paper as well as the FRBs below the 3σ significance threshold from CHIME/FRB Collaboration (2022). For each FRB considered, we give the component number vector (ncomp), the quasi-period Psc in milliseconds, the value of the statistic 
with its respective significance 
as recalculated in this work, and the reduced χ2 (rχ2) with its significance using the rectangular (σχ2, Π, assuming η = 0.2), shifted Poissonian (σχ2, P, assuming η = 0.2), and lognormal (σχ2, ln, just for repeater bursts) distributions.
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