<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM QUARTERLY
REPORT ON FORM 10-Q AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<S> <C> <C>
<PERIOD-TYPE> 3-MOS 9-MOS
<FISCAL-YEAR-END> DEC-31-2000 DEC-31-2000
<PERIOD-START> JUL-01-2000 JAN-01-2000
<PERIOD-END> SEP-30-2000 SEP-30-2000
<CASH> 35,297 35,297
<SECURITIES> 0 0
<RECEIVABLES> 14,205 14,205
<ALLOWANCES> 0 0
<INVENTORY> 328 328
<CURRENT-ASSETS> 50,788 50,788
<PP&E> 292,058 292,058
<DEPRECIATION> 131,503 131,503
<TOTAL-ASSETS> 214,842 214,842
<CURRENT-LIABILITIES> 18,570 18,570
<BONDS> 124,581 124,581
0 0
6,000 6,000
<COMMON> 91 91
<OTHER-SE> 65,600 65,600
<TOTAL-LIABILITY-AND-EQUITY> 214,842 214,842
<SALES> 17,585 48,463
<TOTAL-REVENUES> 18,229 50,253
<CGS> 6,150 17,568
<TOTAL-COSTS> 15,434 49,023
<OTHER-EXPENSES> 0 0
<LOSS-PROVISION> 0 0
<INTEREST-EXPENSE> 3,156 9,500
<INCOME-PRETAX> 2,530 865
<INCOME-TAX> 0 0
<INCOME-CONTINUING> 2,530 865
<DISCONTINUED> 0 0
<EXTRAORDINARY> 0 0
<CHANGES> 0 0
<NET-INCOME> 2,530 865
<EPS-BASIC> .28 .10
<EPS-DILUTED> .22 .10
</TABLE>