FRB121102-20221224-S001-R001-R-015847.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2022-12-24 16:58:49.719 16.551 +/- 0.555 (3sigma) 15.930 +/- 0.556 (5sigma) 15.087 +/- 0.558 (10sigma)