FRB20181030A-20221231-S001-R001-R-034750.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2022-12-31 18:47:52.429 17.121 +/- 1.259 (3sigma) 16.590 +/- 1.261 (5sigma) 15.869 +/- 1.264 (10sigma)