<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE
SHEET AT MARCH 31, 2000 AND DECEMBER 31, 1999 AND THE STATEMENT OF OPERATIONS
FOR THE THREE MONTHS ENDED MARCH 31, 2000 AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-START> JAN-01-2000
<PERIOD-END> MAR-31-2000
<CASH> 60,207
<SECURITIES> 0
<RECEIVABLES> 142,679
<ALLOWANCES> 0
<INVENTORY> 0
<CURRENT-ASSETS> 202,888
<PP&E> 1,461,560
<DEPRECIATION> 10,022,991
<TOTAL-ASSETS> 1,664,446
<CURRENT-LIABILITIES> 46,568
<BONDS> 0
0
0
<COMMON> 0
<OTHER-SE> 1,617,878
<TOTAL-LIABILITY-AND-EQUITY> 1,664,446
<SALES> 355,199
<TOTAL-REVENUES> 357,875
<CGS> 0
<TOTAL-COSTS> 0
<OTHER-EXPENSES> 177,631
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 0
<INCOME-PRETAX> 0
<INCOME-TAX> 0
<INCOME-CONTINUING> 180,244
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 180,244
<EPS-BASIC> 35.05
<EPS-DILUTED> 35.05
</TABLE>