WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE. <ARTICLE> 5 <LEGEND> THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE SHEET AT DECEMBER 31, 1998 AND THE STATEMENT OF OPERATIONS FOR THE TWELVE MONTHS ENDED DECEMBER 31, 1998 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS INCLUDED AS PART OF ITS ANNUAL REPORT ON FORM 10-K FOR THE PERIOD DECEMBER 31, 1998. </LEGEND> <PERIOD-TYPE> 12-MOS <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-START> JAN-01-1998 <PERIOD-END> DEC-31-1998 <CASH> 653,851 <SECURITIES> 0 <RECEIVABLES> 199,488 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 853,339 <PP&E> 16,545,596 <DEPRECIATION> 8,048,301 <TOTAL-ASSETS> 9,350,634 <CURRENT-LIABILITIES> 0 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 9,350,634 <TOTAL-LIABILITY-AND-EQUITY> 9,350,634 <SALES> 0 <TOTAL-REVENUES> 1,327,862 <CGS> 0 <TOTAL-COSTS> 1,042,439 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 0 <INCOME-TAX> 0 <INCOME-CONTINUING> 0 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 217,407 <EPS-PRIMARY> 0 <EPS-DILUTED> 0 [ARTICLE] 5 [LEGEND] THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE SHEET AT SEPTEMBER 30, 1998 (UNAUDITED) AND THE STATEMENT OF OPERATIONS FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 1998 (UNAUDITED) AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS INCLUDING AS PART OF ITS QUARTERLY REPORT ON FORM 10-Q FOR THE PERIOD ENDING SEPTEMBER 30, 1998. [/LEGEND] [PERIOD-TYPE] 9-MOS [FISCAL-YEAR-END] DEC-31-1998 [PERIOD-START] JAN-01-1998 [PERIOD-END] SEP-30-1998 [CASH] 605,930 [SECURITIES] 0 [RECEIVABLES] 262,345 [ALLOWANCES] 0 [INVENTORY] 0 [CURRENT-ASSETS] 868,275 [PP&E] 16,826,673 [DEPRECIATION] 7,941,953 [TOTAL-ASSETS] 9,752,995 [CURRENT-LIABILITIES] 0 [BONDS] 0 [PREFERRED-MANDATORY] 0 [PREFERRED] 0 [COMMON] 0 [OTHER-SE] 9,752,995 [TOTAL-LIABILITY-AND-EQUITY] 9,752,995 [SALES] 0 [TOTAL-REVENUES] 1,028,400 [CGS] 0 [TOTAL-COSTS] 782,754 [OTHER-EXPENSES] 0 [LOSS-PROVISION] 0 [INTEREST-EXPENSE] 0 [INCOME-PRETAX] 0 [INCOME-TAX] 0 [INCOME-CONTINUING] 0 [DISCONTINUED] 0 [EXTRAORDINARY] 0 [CHANGES] 0 [NET-INCOME] 223,192 [EPS-PRIMARY] 0 [EPS-DILUTED] 0 [ARTICLE] 5 [LEGEND] THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE SHEET AT JUNE 30, 1998 (UNAUDITED) AND THE STATEMENT OF OPERATIONS FOR THE QUARTERLY PERIOD ENDED JUNE 30, 1998 (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 JUNE 30, 1998. [/LEGEND] [PERIOD-TYPE] 6-MOS [FISCAL-YEAR-END] DEC-31-1998 [PERIOD-START] JAN-01-1998 [PERIOD-END] JUN-30-1998 [CASH] 672,468 [SECURITIES] 0 [RECEIVABLES] 270,540 [ALLOWANCES] 0 [INVENTORY] 0 [CURRENT-ASSETS] 943,008 [PP&E] 16,983,984 [DEPRECIATION] 7,768,973 [TOTAL-ASSETS] 10,158,019 [CURRENT-LIABILITIES] 0 [BONDS] 0 [PREFERRED-MANDATORY] 0 [PREFERRED] 0 [COMMON] 0 [OTHER-SE] 10,158,019 [TOTAL-LIABILITY-AND-EQUITY] 10,158,019 [SALES] 0 [TOTAL-REVENUES] 689,448 [CGS] 0 [TOTAL-COSTS] 520,804 [OTHER-EXPENSES] 0 [LOSS-PROVISION] 0 [INTEREST-EXPENSE] 0 [INCOME-PRETAX] 0 [INCOME-TAX] 0 [INCOME-CONTINUING] 0 [DISCONTINUED] 0 [EXTRAORDINARY] 0 [CHANGES] 0 [NET-INCOME] 157,485 [EPS-PRIMARY] 0 [EPS-DILUTED] 0 [ARTICLE] 5 [LEGEND] THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE SHEET AT MARCH 31, 1998 (UNAUDITED) AND THE STATEMENT OF OPERATIONS FOR THE QUARTERLY PERIOD ENDED MARCH 31, 1998 (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, 1998. [/LEGEND] [PERIOD-TYPE] 3-MOS [FISCAL-YEAR-END] DEC-31-1998 [PERIOD-START] JAN-01-1998 [PERIOD-END] MAR-31-1998 [CASH] 651,131 [SECURITIES] 0 [RECEIVABLES] 285,561 [ALLOWANCES] 0 [INVENTORY] 0 [CURRENT-ASSETS] 936,692 [PP&E] 17,121,582 [DEPRECIATION] 7,584,377 [TOTAL-ASSETS] 10,473,897 [CURRENT-LIABILITIES] 0 [BONDS] 0 [PREFERRED-MANDATORY] 0 [PREFERRED] 0 [COMMON] 0 [OTHER-SE] 10,473,897 [TOTAL-LIABILITY-AND-EQUITY] 10,473,897 [SALES] 0 [TOTAL-REVENUES] 332,880 [CGS] 0 [TOTAL-COSTS] 263,224 [OTHER-EXPENSES] 0 [LOSS-PROVISION] 0 [INTEREST-EXPENSE] 0 [INCOME-PRETAX] 0 [INCOME-TAX] 0 [INCOME-CONTINUING] 0 [DISCONTINUED] 0 [EXTRAORDINARY] 0 [CHANGES] 0 [NET-INCOME] 63,245 [EPS-PRIMARY] 0 [EPS-DILUTED] 0 [ARTICLE] 5 [LEGEND] THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE SHEET AT DECEMBER 31, 1997 AND THE STATEMENT OF OPERATIONS FOR THE TWELVE MONTHS ENDED DECEMBER 31, 1997 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS INCLUDED AS PART OF ITS ANNUAL REPORT ON FORM 10-K FOR THE PERIOD ENDED DECEMBER 31, 1997. [/LEGEND] [PERIOD-TYPE] 12-MOS [FISCAL-YEAR-END] DEC-31-1997 [PERIOD-START] JAN-01-1997 [PERIOD-END] DEC-31-1997 [CASH] 714,528 [SECURITIES] 0 [RECEIVABLES] 247,992 [ALLOWANCES] 0 [INVENTORY] 0 [CURRENT-ASSETS] 962,520 [PP&E] 17,249,260 [DEPRECIATION] 7,391,011 [TOTAL-ASSETS] 10,820,769 [CURRENT-LIABILITIES] 0 [BONDS] 0 [PREFERRED-MANDATORY] 0 [PREFERRED] 0 [COMMON] 0 [OTHER-SE] 10,820,769 [TOTAL-LIABILITY-AND-EQUITY] 10,820,769 [SALES] 0 [TOTAL-REVENUES] 1,338,664 [CGS] 0 [TOTAL-COSTS] 1,066,522 [OTHER-EXPENSES] 0 [LOSS-PROVISION] 0 [INTEREST-EXPENSE] 0 [INCOME-PRETAX] 0 [INCOME-TAX] 0 [INCOME-CONTINUING] 0 [DISCONTINUED] 0 [EXTRAORDINARY] 0 [CHANGES] 0 [NET-INCOME] 287,731 [EPS-PRIMARY] 0 [EPS-DILUTED] 0 [ARTICLE] 5 [LEGEND] THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE SHEET AT MARCH 31, 1997 (UNAUDITED), JUNE 30, 1997 (UNAUDITED) AND SEPTEMBER SEPTEMBER 30, 1997 (UNAUDITED) AND THE STATEMENT OF OPERATIONS FOR THE QUARTERLY PERIOD ENDED MARCH 31, 1997 (UNAUDITED), JUNE 30, 1997 (UNAUDITED) 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 PERIOD ENDED MARCH 30, 1997, JUNE 30, 1997 AND 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] 658,115 663,656 697,143 [SECURITIES] 0 0 0 [RECEIVABLES] 341,736 340,972 353,985 [ALLOWANCES] 0 0 0 [INVENTORY] 0 0 0 [CURRENT-ASSETS] 999,851 1,004,629 1,051,128 [PP&E] 17,562,734 17,471,632 17,318,635 [DEPRECIATION] 6,764,460 6,982,364 7,169,395 [TOTAL-ASSETS] 11,798,125 11,493,896 11,200,368 [CURRENT-LIABILITIES] 0 0 0 [BONDS] 0 0 0 [PREFERRED-MANDATORY] 0 0 0 [PREFERRED] 0 0 0 [COMMON] 0 0 0 [OTHER-SE] 11,798,125 11,493,896 11,200,368 [TOTAL-LIABILITY-AND-EQUITY] 11,798,125 11,493,896 11,200,368 [SALES] 0 0 0 [TOTAL-REVENUES] 329,422 685,260 1,040,031 [CGS] 0 0 0 [TOTAL-COSTS] 264,904 531,729 796,068 [OTHER-EXPENSES] 0 0 0 [LOSS-PROVISION] 0 0 0 [INTEREST-EXPENSE] 0 0 0 [INCOME-PRETAX] 83,744 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] 83,744 152,876 257,213 [EPS-PRIMARY] 0 0 0 [EPS-DILUTED] 0 0 0 [ARTICLE] 5 [LEGEND] THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE SHET AT DECEMBER 31, 1996 AND THE STATEMENT OF OPERATIONS FOR THE TWELVE MONTHS ENDED DECEMBER 31, 1996 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS INCLUDED AS PART OF ITS ANNUAL REPORT ON FORM 10-K FOR THE PERIOD ENDED DECEMBER 31, 1996 [/LEGEND] [PERIOD-TYPE] 12-MOS [FISCAL-YEAR-END] DEC-31-1996 [PERIOD-START] JAN-01-1996 [PERIOD-END] DEC-31-1996 [CASH] 642,886 [SECURITIES] 0 [RECEIVABLES] 389,210 [ALLOWANCES] 0 [INVENTORY] 0 [CURRENT-ASSETS] 1,032,096 [PP&E] 17,587,240 [DEPRECIATION] 6,519,342 [TOTAL-ASSETS] 12,099,994 [CURRENT-LIABILITIES] 0 [BONDS] 0 [PREFERRED-MANDATORY] 0 [PREFERRED] 0 [COMMON] 0 [OTHER-SE] 12,099,994 [TOTAL-LIABILITY-AND-EQUITY] 12,099,994 [SALES] 0 [TOTAL-REVENUES] 1,648,740 [CGS] 0 [TOTAL-COSTS] 1,062,825 [OTHER-EXPENSES] 0 [LOSS-PROVISION] 0 [INTEREST-EXPENSE] 0 [INCOME-PRETAX] 0 [INCOME-TAX] 0 [INCOME-CONTINUING] 0 [DISCONTINUED] 0 [EXTRAORDINARY] 0 [CHANGES] 0 [NET-INCOME] 647,151 [EPS-PRIMARY] 0 [EPS-DILUTED] 0 [ARTICLE] 5 [LEGEND] THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE SHEET AT MARCH 31, 1996, JUNE 30, 1996 AND SEPTEMBER 30, 1996 (UNAUDITED) AND THE STATEMENTS OF OPERATIONS FOR THE QUARTERLY PERIOD ENDED MARCH 31, 1996, JUNE 30, 1996 AND SEPTEMBER 30, 1996 (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-31-1996 DEC-31-1996 DEC-31-1996 [PERIOD-START] JAN-01-1996 JAN-01-1996 JAN-01-1996 [PERIOD-END] MAR-31-1996 JUN-30-1996 SEP-30-1996 [CASH] 795,560 737,833 691,302 [SECURITIES] 0 0 0 [RECEIVABLES] 475,894 439,561 414,819 [ALLOWANCES] 0 0 0 [INVENTORY] 0 0 0 [CURRENT-ASSETS] 1,271,454 1,177,394 1,106,121 [PP&E] 17,620,649 17,603,998 17,629,317 [DEPRECIATION] 5,788,713 6,035,713 6,280,263 [TOTAL-ASSETS] 13,103,390 12,745,679 12,455,175 [CURRENT-LIABILITIES] 0 0 0 [BONDS] 0 0 0 [PREFERRED-MANDATORY] 0 0 0 [PREFERRED] 0 0 0 [COMMON] 0 0 0 [OTHER-SE] 13,103,390 12,745,679 12,455,175 [TOTAL-LIABILITY-AND-EQUITY] 13,103,390 12,745,679 12,455,175 [SALES] 0 0 0 [TOTAL-REVENUES] 465,267 873,492 1,295,796 [CGS] 0 0 0 [TOTAL-COSTS] 266,190 532,283 800,164 [OTHER-EXPENSES] 0 0 0 [LOSS-PROVISION] 0 0 0 [INTEREST-EXPENSE] 0 0 0 [INCOME-PRETAX] 0 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] 211,265 369,426 540,627 [EPS-PRIMARY] 0 0 0 [EPS-DILUTED] 0 0 0