FRB20180916B-20221219-S001-R001-R-212135.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2022-12-19 12:21:39.420 16.527 +/- 0.734 (3sigma) 15.915 +/- 0.736 (5sigma) 15.083 +/- 0.738 (10sigma)