FRB20180814A-20221230-S001-R001-R-232728.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2022-12-30 14:27:30.178 16.526 +/- 0.640 (3sigma) 16.009 +/- 0.641 (5sigma) 15.307 +/- 0.643 (10sigma)