FRB20190213A-20221222-S001-R001-R-210140.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2022-12-22 12:01:44.130 16.592 +/- 1.088 (3sigma) 16.058 +/- 1.089 (5sigma) 15.334 +/- 1.092 (10sigma)