<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM JUNE 30,1999
FORM 10-Q AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               JUN-30-1999
<CASH>                                          83,436
<SECURITIES>                                         0
<RECEIVABLES>                                   54,335
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                               161,445
<PP&E>                                       1,420,871
<DEPRECIATION>                                 556,042
<TOTAL-ASSETS>                               1,072,814
<CURRENT-LIABILITIES>                           56,464
<BONDS>                                        673,662
<PREFERRED-MANDATORY>                              311
<PREFERRED>                                          0
<COMMON>                                             0
<OTHER-SE>                                     341,934
<TOTAL-LIABILITY-AND-EQUITY>                 1,072,814
<SALES>                                        153,273
<TOTAL-REVENUES>                               158,565
<CGS>                                           81,317
<TOTAL-COSTS>                                   81,317
<OTHER-EXPENSES>                                73,078
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              29,136
<INCOME-PRETAX>                                (24,966)
<INCOME-TAX>                                   (12,028)
<INCOME-CONTINUING>                            (12,938)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (12,938)
<EPS-BASIC>                                     (.24)
<EPS-DILUTED>                                     (.24)