FRB20201124A-20221230-S001-R001-R-231751.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2022-12-30 14:17:55.439 16.244 +/- 0.713 (3sigma) 15.689 +/- 0.714 (5sigma) 14.937 +/- 0.716 (10sigma)