The following Average Key Commodity Prices and Differentials are presented for informational purposes only. This is general industry information and does not reflect prices paid or received by Tesoro.

This information is not intended to be an indicator of Tesoro's past or future financial results. The information was compiled from third party sources and Tesoro does not make any representation as to the accuracy of the data and does not undertake any obligation to update, revise or continue to provide the data.

Industry Differentials
Historical Industry Differentials (2003 – 2009)