FRB20190212A-20221116-S001-R001-R-024806.fts
upper limit SN vs magnitude graph from USNO-B1 catalog
UT upper limit
2022-11-16 17:48:10.380
15.728 +/- 1.387 (3sigma)
15.174 +/- 1.390 (5sigma)
14.422 +/- 1.394 (10sigma)