B2_1520p31-20210421-S001-R001-B-013601.fts
upper limit SN vs magnitude graph from USNO-B1 catalog
UT upper limit
2021-04-21 16:36:02
17.615 +/- 2.747 (3sigma)
16.914 +/- 2.753 (5sigma)
15.962 +/- 2.765 (10sigma)


B2_1520p31-20210421-S001-R001-I-013947.fts
upper limit SN vs magnitude graph from USNO-B1 catalog
UT upper limit
2021-04-21 16:39:47
16.020 +/- 3.107 (3sigma)
15.362 +/- 3.114 (5sigma)
14.469 +/- 3.128 (10sigma)


B2_1520p31-20210421-S001-R001-R-013831.fts
upper limit SN vs magnitude graph from USNO-B1 catalog
UT upper limit
2021-04-21 16:38:32
16.782 +/- 2.506 (3sigma)
16.030 +/- 2.512 (5sigma)
15.010 +/- 2.525 (10sigma)


B2_1520p31-20210421-S001-R001-V-013716.fts