Open Access
Table A.1.
GRB population after different selection and analysis stages.
| Stage | loc GRBs | un-loc GRBs | Total |
|---|---|---|---|
| Follow-up observations | - | - | 107 |
| Selected for analysis | 66 | 23 | 89 |
| Retained after quality selection | 48 | 15 | 63 |
| Flux ULs determined | 48 | 1 | 49 |
Notes. GRBs are classified as well-localised (loc, typically Swift/BAT alerts with position uncertainty ≲3′) or poorly localised (un-loc, mostly Fermi/GBM alerts with uncertainty ≳0.2°).
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