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<TABLE> <S> <C>
<ARTICLE> 5
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> JAN-01-2000
<PERIOD-END> JUN-30-2000
<CASH> 4,322,000
<SECURITIES> 0
<RECEIVABLES> 2,577,000
<ALLOWANCES> (244,000)
<INVENTORY> 0
<CURRENT-ASSETS> 6,741,000
<PP&E> 89,708,000
<DEPRECIATION> (64,012,000)
<TOTAL-ASSETS> 34,383,000
<CURRENT-LIABILITIES> 7,970,000
<BONDS> 0
0
0
<COMMON> 101,000
<OTHER-SE> 25,742,000
<TOTAL-LIABILITY-AND-EQUITY> 34,383,000
<SALES> 7,086,000
<TOTAL-REVENUES> 7,453,000
<CGS> 3,135,000
<TOTAL-COSTS> 3,135,000
<OTHER-EXPENSES> 2,198,000
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 391,000
<INCOME-PRETAX> 1,729,000
<INCOME-TAX> 0
<INCOME-CONTINUING> 1,729,000
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 1,729,000
<EPS-BASIC> 0.170
<EPS-DILUTED> 0.170
</TABLE>
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