FRB20181128A-20221219-S001-R001-R-230309.fts
upper limit SN vs magnitude graph from USNO-B1 catalog
UT upper limit
2022-12-19 14:03:11.269
16.850 +/- 0.664 (3sigma)
16.265 +/- 0.665 (5sigma)
15.471 +/- 0.668 (10sigma)