# What yield on T-bills is presented in obtained data from quantmod?

When I try to find, for example 3 months T-bill rate, how that rate is calculated?

getSymbols(Symbols = "DGS3MO", src = "FRED", auto.assign = FALSE) -> t3

tail(t3)

      DGS3MO


2017-06-28 1.02 2017-06-29 1.04 2017-06-30 1.03 2017-07-03 1.06 2017-07-04 NA 2017-07-05 1.05

How these yields are calculated? Is it bank discount yield, because that's how yield of T-bills is calculated by convention If I'm not wrong, or is it recalculated bond equivalent yield?