FRB20190117A-20221222-S001-R001-R-191931.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2022-12-22 10:19:33.189 16.212 +/- 1.991 (3sigma) 15.518 +/- 1.996 (5sigma) 14.576 +/- 2.005 (10sigma)