FRB20180916B-20221208-S001-R001-R-002500.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2022-12-08 15:25:02.819 15.450 +/- 1.749 (3sigma) 14.777 +/- 1.754 (5sigma) 13.864 +/- 1.762 (10sigma)