| | Retail Gasoline Prices by Grade by Formulation |
| | . |
| | Chicago, Regular |
| | . |
| | Conventional |
| | Date | | Areas | | RFG Areas | | Average |
| | 03/09/09 | $2.032 | $2.032 |
| | 03/02/09 | $1.960 | $1.960 |
| | 02/23/09 | $1.916 | $1.916 |
| | 02/16/09 | $1.997 | $1.997 |
| | 02/09/09 | $1.918 | $1.918 |
| | 02/02/09 | $1.922 | $1.922 |
| | 01/26/09 | $1.949 | $1.949 |
| | 01/19/09 | $2.011 | $2.011 |
| |
| | Chicago, Midgrade |
| | . |
| | Conventional |
| | Date | | Areas | | RFG Areas | | Average |
| | 03/09/09 | $2.133 | $2.133 |
| | 03/02/09 | $2.068 | $2.068 |
| | 02/23/09 | $2.024 | $2.024 |
| | 02/16/09 | $2.102 | $2.102 |
| | 02/09/09 | $2.025 | $2.025 |
| | 02/02/09 | $2.030 | $2.030 |
| | 01/26/09 | $2.054 | $2.054 |
| | 01/19/09 | $2.121 | $2.121 |
| |
| | Chicago, Premium |
| | . |
| | Conventional |
| | Date | | Areas | | RFG Areas | | Average |
| | 03/09/09 | $2.237 | $2.237 |
| | 03/02/09 | $2.172 | $2.172 |
| | 02/23/09 | $2.128 | $2.128 |
| | 02/16/09 | $2.202 | $2.202 |
| | 02/09/09 | $2.127 | $2.127 |
| | 02/02/09 | $2.134 | $2.134 |
| | 01/26/09 | $2.157 | $2.157 |
| | 01/19/09 | $2.222 | $2.222 |
| |
| | Last Updated 3/9/2009 |