FRB20181128A-20221222-S001-R001-R-234332.fts
upper limit SN vs magnitude graph from USNO-B1 catalog
UT upper limit
2022-12-22 14:43:34.100
16.719 +/- 0.774 (3sigma)
16.171 +/- 0.775 (5sigma)
15.428 +/- 0.778 (10sigma)