<ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE SHEETS AT MARCH 31, 1997, JUNE 30, 1997 AND SEPTEMBER 30, 1997 (UNAUDITED) AND THE STATEMENT OF OPERATIONS FOR THE QUARTERLY PERIOD ENDED MARCH 31, 1997, JUNE 30, 1997 AND 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 RESPECTIVE PERIODS THEN ENDED </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> 896,964 859,457 949,776 <SECURITIES> 0 0 0 <RECEIVABLES> 527,711 484,355 466,547 <ALLOWANCES> 0 0 0 <INVENTORY> 0 0 0 <CURRENT-ASSETS> 1,424,675 1,343,812 1,416,323 <PP&E> 16,481,361 16,365,883 16,014,882 <DEPRECIATION> 7,066,754 7,249,431 7,312,924 <TOTAL-ASSETS> 10,839,282 10,460,264 10,188,281 <CURRENT-LIABILITIES> 0 0 0 <BONDS> 0 0 0 <PREFERRED-MANDATORY> 0 0 0 <PREFERRED> 0 0 0 <COMMON> 0 0 0 <OTHER-SE> 10,839,282 10,460,264 110,118,281 <TOTAL-LIABILITY-AND-EQUITY> 10,839,282 10,460,264 110,118,281 <SALES> 0 0 0 <TOTAL-REVENUES> 452,207 885,170 1,322,701 <CGS> 0 0 0 <TOTAL-COSTS> 250,729 503,561 742,795 <OTHER-EXPENSES> 0 0 0 <LOSS-PROVISION> 0 0 0 <INTEREST-EXPENSE> 0 0 0 <INCOME-PRETAX> 207,473 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> 207,473 373,192 543,757 <EPS-PRIMARY> 0 0 0 <EPS-DILUTED> 0 0 0