2.1.1045 Part 1 Section 126.96.36.1990, TBILLYIELD
a. The standard states that the argument pr is the Treasury bill's price per $100 face value.
In Office, the argument pr is not specific to any currency or Treasury bill.
b. The standard states that If settlement > maturity, #NUM! is returned.
Office returns #NUM! if settlement ≥ maturity.