FRB20181030A-20230102-S001-R001-R-034530.fts
upper limit SN vs magnitude graph from USNO-B1 catalog
UT upper limit
2023-01-02 18:45:32.039
17.154 +/- 1.169 (3sigma)
16.625 +/- 1.170 (5sigma)
15.907 +/- 1.174 (10sigma)