FRB121102-20221225-S001-R001-R-233627.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2022-12-25 14:36:29.250 16.428 +/- 0.549 (3sigma) 15.851 +/- 0.550 (5sigma) 15.068 +/- 0.552 (10sigma)