FRB20190117A-20221228-S001-R001-R-190343.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2022-12-28 10:03:45.490 15.803 +/- 2.211 (3sigma) 15.105 +/- 2.217 (5sigma) 14.158 +/- 2.228 (10sigma)