FRB20190222A-20221225-S001-R001-R-201725.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2022-12-25 11:17:27.140 15.855 +/- 2.152 (3sigma) 15.163 +/- 2.158 (5sigma) 14.225 +/- 2.169 (10sigma)