<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM CONSOLIDATED
BALANCE SHEETS AND CONSOLIDATED STATEMENTS OF OPERATIONS FOUND ON PAGES 3&4 OF
THE COMPANY'S FORM 10K/A FOR THE YEAR TO DATE AND IS QUALIFIED IN ITS ENTIRETY
BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<RESTATED>
<S> <C> <C>
<PERIOD-TYPE> YEAR YEAR
<FISCAL-YEAR-END> DEC-31-1998 DEC-31-1999
<PERIOD-START> JAN-01-1998 JAN-01-1999
<PERIOD-END> DEC-31-1998 DEC-31-1999
<CASH> 1,565 217,288
<SECURITIES> 0 0
<RECEIVABLES> 160,706 214,633
<ALLOWANCES> 0 0
<INVENTORY> 0 0
<CURRENT-ASSETS> 162,271 431,921
<PP&E> 13,864,309 9,551,360
<DEPRECIATION> (8,306,508) 7,174,110
<TOTAL-ASSETS> 5,906,884 2,858,50
<CURRENT-LIABILITIES> 248,758 321,873
<BONDS> 2,401,080 716,792
0 0
0 0
<COMMON> 0 0
<OTHER-SE> 3,257,046 1,819,835
<TOTAL-LIABILITY-AND-EQUITY> 5,906,884 2,858,500
<SALES> 0 0
<TOTAL-REVENUES> 4,620,771 3,005,189
<CGS> 0 0
<TOTAL-COSTS> 4,682,385 3,378,134
<OTHER-EXPENSES> 0 0
<LOSS-PROVISION> 0 0
<INTEREST-EXPENSE> 272,640 105,223
<INCOME-PRETAX> 0 0
<INCOME-TAX> 0 0
<INCOME-CONTINUING> 0 0
<DISCONTINUED> 0 0
<EXTRAORDINARY> 0 0
<CHANGES> 0 0
<NET-INCOME> (334,254) (478,168)
<EPS-BASIC> 0 0
<EPS-DILUTED> 0 0
</TABLE>