and ending in the calendar month in which the determination is made during any 1 month) on outstanding marketable obligations of the United States with remaining periods to maturity of more than 3 years and not over 9 years. (d) Federal Long-Term Rate The Federal long-term rate shall be the rate determined by the Secretary based on the average market yield (selected by the Secretary and ending in the calendar month in which the determination is made during any 1 month) on outstanding marketable obligations of the United States with remaining periods to maturity of over 9 years. (e) Determination of Rates During each calendar month, the Secretary shall determine the Federal short-term rate, the Federal mid-term rate and the Federal long-term rate which shall apply during the following calendar month. 6 COLLECTIONS