FRB20180814A-20230103-S001-R001-R-230047.fts
upper limit SN vs magnitude graph from USNO-B1 catalog
UT upper limit
2023-01-03 14:00:49.609
16.383 +/- 0.655 (3sigma)
15.869 +/- 0.656 (5sigma)
15.172 +/- 0.658 (10sigma)