FRB121102-20221230-S001-R001-R-232052.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2022-12-30 14:20:54.590 16.611 +/- 0.459 (3sigma) 16.039 +/- 0.460 (5sigma) 15.264 +/- 0.461 (10sigma)