<ARTICLE> 5 <LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE
SHEETS AT MARCH 31, 1997, JUNE 30, 1997, SEPTEMBER 30, 1997, UNAUDITED) AND THE
STATEMENT OF OPERATIONS FOR THE QUARTERLY PERIOD ENDED MARCH 31, 1997, JUNE 30,
1997, SEPTEMBER 30, 1997 (UNAUDITED) AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS INCLUDED AS PART OF ITS QUARTERLY REPORT
ON FORM 10-Q FOR THE PERIOD MARCH 31, 1997, JUNE 30, 1997, SEPTEMBER 30, 1997.
</LEGEND>
<PERIOD-TYPE> 3-MOS 6-MOS 9-MOS
<FISCAL-YEAR-END> DEC-31-1997 DEC-31-1997 DEC-31-1997
<PERIOD-START> JAN-01-1997 JAN-01-1997 JAN-01-1997
<PERIOD-END> MAR-31-1997 JUN-30-1997 SEP-30-1997
<CASH> 507,946 460,281 406,441
<SECURITIES> 0 0 0
<RECEIVABLES> 207,617 124,958 96,384
<ALLOWANCES> 0 0 0
<INVENTORY> 0 0 0
<CURRENT-ASSETS> 715,563 585,239 502,825
<PP&E> 2,794,369 2,442,653 2,148,765
<DEPRECIATION> 1,939,647 1,693,446 1,482,825
<TOTAL-ASSETS> 1,570,285 1,334,446 1,168,765
<CURRENT-LIABILITIES> 0 0 0
<BONDS> 0 0 0
<PREFERRED-MANDATORY> 0 0 0
<PREFERRED> 0 0 0
<COMMON> 0 0 0
<OTHER-SE> 1,570,285 1,334,446 1,168,765
<TOTAL-LIABILITY-AND-EQUITY> 1,570,285 1,334,446 1,168,765
<SALES> 0 0 0
<TOTAL-REVENUES> 107,741 150,589 229,030
<CGS> 0 0 0
<TOTAL-COSTS> 10,092 21,422 31,029
<OTHER-EXPENSES> 0 0 0
<LOSS-PROVISION> 0 0 0
<INTEREST-EXPENSE> 0 0 0
<INCOME-PRETAX> 144,666 0 0
<INCOME-TAX> 0 0 0
<INCOME-CONTINUING> 0 0 0
<DISCONTINUED> 0 0 0
<EXTRAORDINARY> 0 0 0
<CHANGES> 0 0 0
<NET-INCOME> 144,666 214,120 315,536
<EPS-PRIMARY> 0 0 0
<EPS-DILUTED> 0 0 0