FRB20190117A-20230103-S001-R001-R-185856.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2023-01-03 09:58:58.579 16.145 +/- 1.467 (3sigma) 15.501 +/- 1.470 (5sigma) 14.626 +/- 1.476 (10sigma)