FRB20180814A-20221227-S001-R001-R-215540.fts

upper limit SN vs magnitude graph from USNO-B1 catalog

UT upper limit 2022-12-27 12:55:42.649 16.531 +/- 0.584 (3sigma) 16.022 +/- 0.584 (5sigma) 15.332 +/- 0.586 (10sigma)