FRB20190208A-20221227-S001-R001-R-180011.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2022-12-27 09:00:13.500 16.040 +/- 0.944 (3sigma) 15.431 +/- 0.946 (5sigma) 14.605 +/- 0.950 (10sigma)