| | Retail Gasoline Prices by Grade by Formulation |
| | . |
| | Rocky Mountain, Regular |
| | . |
| | Conventional |
| | Date | | Areas | | RFG Areas | | Average |
| | 01/12/09 | $1.563 | $1.563 |
| | 01/05/09 | $1.495 | $1.495 |
| | 12/29/08 | $1.506 | $1.506 |
| | 12/22/08 | $1.525 | $1.525 |
| | 12/15/08 | $1.559 | $1.559 |
| | 12/08/08 | $1.623 | $1.623 |
| | 12/01/08 | $1.738 | $1.738 |
| | 11/24/08 | $1.847 | $1.847 |
| |
| | Rocky Mountain, Midgrade |
| | . |
| | Conventional |
| | Date | | Areas | | RFG Areas | | Average |
| | 01/12/09 | $1.676 | $1.676 |
| | 01/05/09 | $1.598 | $1.598 |
| | 12/29/08 | $1.602 | $1.602 |
| | 12/22/08 | $1.621 | $1.621 |
| | 12/15/08 | $1.657 | $1.657 |
| | 12/08/08 | $1.723 | $1.723 |
| | 12/01/08 | $1.839 | $1.839 |
| | 11/24/08 | $1.952 | $1.952 |
| |
| | Rocky Mountain, Premium |
| | . |
| | Conventional |
| | Date | | Areas | | RFG Areas | | Average |
| | 01/12/09 | $1.785 | $1.785 |
| | 01/05/09 | $1.710 | $1.710 |
| | 12/29/08 | $1.716 | $1.716 |
| | 12/22/08 | $1.731 | $1.731 |
| | 12/15/08 | $1.771 | $1.771 |
| | 12/08/08 | $1.837 | $1.837 |
| | 12/01/08 | $1.954 | $1.954 |
| | 11/24/08 | $2.066 | $2.066 |
| |
| | Last Updated 1/12/2009 |