FRB20190209A-20230103-S001-R001-R-023644.fts
upper limit SN vs magnitude graph from USNO-B1 catalog
UT upper limit
2023-01-03 17:36:46.859
16.518 +/- 1.563 (3sigma)
15.887 +/- 1.566 (5sigma)
15.029 +/- 1.572 (10sigma)