FRB20180916B-20221119-S001-R001-R-220101.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2022-11-19 13:01:03.120 15.115 +/- 2.609 (3sigma) 14.347 +/- 2.617 (5sigma) 13.304 +/- 2.634 (10sigma)