Treasury Notes Fall: Yields on four-year Treasury notes fell at auction to the lowest level in 15 months. The average yield was 8.19%, down from 9.70% at the last comparable auction on March 29. It was the lowest rate since four-year notes averaged 7.90% on March 24, 1988. The notes will carry a coupon rate of 8.125%, with each $10,000 in face value selling for $9,978.20. A total of $7.53 billion in notes were sold out of bids totaling $20.34 billion.