NOTICE All these documents are historical and the Company has not updated information for later changes in facts and circumstances. (pdf format) Second Quarter 2004 Supplemental Tables Supplemental Tables GAAP to Non-GAAP Cash Flow Reconciliation First Quarter 2004 Supplemental Tables Table 1 Calculation of Cash Flows Excluding Special Items Table 2 Calculation of EBITDAX Excluding Special Items Table 3 Calculations of Cash Margins Table 4 Independent Producer Finance - Revenues and Expenses Table 5 Current Hedging Position - Swaps and Collars Table 6 Dilutive Shares Outstanding Fourth Quarter 2003 Supplemental Tables Table 1 Calculation of Cash Flows Excluding Special Items Table 2 Calculation of EBITDAX Excluding Special Items Table 3 Calculations of Cash Margins Table 4 Independent Producer Finance - Revenues and Expenses Table 5 Current Hedging Position - Swaps and Collars Table 6 Proved Oil and Gas Reserves Summary Table 7 Dilutive Shares Outstanding Third Quarter 2003 Supplemental Tables Table 1 Calculation of Cash Flows Excluding Special Items Table 2 Calculation of EBITDAX Excluding Special Items Table 3 Calculations of Cash Margins Table 4 Independent Producer Finance - Revenues and Expenses Table 5 Current Hedging Position - Swaps and Collars Second Quarter 2003 Supplemental Tables Table 1 Calculation of Cash Flows Excluding Special Items Table 2 Calculation of EBITDAX Excluding Special Items Table 3 Calculations of Cash Margins Table 4 Independent Producer Finance - Revenues and Expenses Table 5 Current Hedging Position - Swaps and Collars First Quarter 2003 Supplemental Tables Table 1 Calculation of Cash Flow Excluding Special Items Table 2 Calculation of EBITDAX Excluding Special Items Table 3 Calculations of Cash Margins Table 4 Independent Producer Finance - Revenues and Expenses Table 5 Consolidated Hedging Position Fourth Quarter 2002 Supplemental Tables Table 1 Calculation of Cash Flow Excluding Special Items Table 2 Calculation of EBITDAX Excluding Special Items Table 3 2002 Reserves Table 4 Calculations of Cash Margins Table 5 Independent Producer Finance - Revenues and Expenses Table 6 Consolidated Hedging Position Third Quarter 2002 Supplemental Tables Table 1-A Calculation of Cash Flows Excluding Special Items (Three Months) Table 1-B Calculation of Cash Flows Excluding Special Items (Nine Months) Table 2 Calculation of EBITDAX Excluding Special Items Table 3 Calculations of Cash Margins Table 4 Independent Producer Finance - Revenues and Expenses Table 5 Consolidated Hedging Position Restated Income Statements by Quarters Year 2002 Income Statement Year 2001 Income Statement Year 2000 Income Statement Year 1999 Income Statement Year 1998 Income Statement Restated Cash Flow by Quarters Year 2002 Cash Flow Year 2001 Cash Flow Year 2000 Cash Flow Year 1999 Cash Flow