<TABLE> <S> <C>
<ARTICLE> 5
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-END> SEP-30-2000
<CASH> 4,176,840
<SECURITIES> 0
<RECEIVABLES> 764,990
<ALLOWANCES> 0
<INVENTORY> 0
<CURRENT-ASSETS> 4,941,830
<PP&E> 172,274,782
<DEPRECIATION> (166,382,391)
<TOTAL-ASSETS> 10,834,221
<CURRENT-LIABILITIES> 4,556,795
<BONDS> 0
0
0
<COMMON> 0
<OTHER-SE> 6,277,426
<TOTAL-LIABILITY-AND-EQUITY> 10,834,221
<SALES> 8,858,213
<TOTAL-REVENUES> 8,967,157
<CGS> 2,597,894
<TOTAL-COSTS> 2,597,894
<OTHER-EXPENSES> 405,000
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 0
<INCOME-PRETAX> 5,964,263
<INCOME-TAX> 0
<INCOME-CONTINUING> 5,964,263
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 5,964,263
<EPS-BASIC> 3,948
<EPS-DILUTED> 3,948
</TABLE>