HDF
| Effective Date | Cents Per Mile | HDF Avg. Price Cents Per Gallon* | Basis Month | | 2/1/2009 | 8¢ | 244.9¢ | December 2008 |
| 1/1/2009 | 19¢ | 287.6¢ | November 2008 |
| 12/1/2008 | 36¢ | 357.6¢ | October 2008 |
HDF Update Archive* The referenced DOE-EIA publication can currently be found at www.eia.doe.gov. On the home page select "Petroleum;" under "Prices" select "Weekly Retail Gasoline and Diesel Prices;" for the "Area" select "U.S.;" for the "Period" select "Monthly;" then refer to the data on the line entitled "Diesel (On-Highway)." Monthly data is normally published Wednesday after the last Monday of a given month.