FRB20190117A-20230102-S001-R001-R-185223.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2023-01-02 09:52:26.030 16.015 +/- 1.678 (3sigma) 15.367 +/- 1.682 (5sigma) 14.488 +/- 1.689 (10sigma)