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> 543,782
<SECURITIES> 0
<RECEIVABLES> 290,728
<ALLOWANCES> 0
<INVENTORY> 0
<CURRENT-ASSETS> 834,510
<PP&E> 9,794,204
<DEPRECIATION> 5,507,701
<TOTAL-ASSETS> 5,121,013
<CURRENT-LIABILITIES> 0
<BONDS> 0
<PREFERRED-MANDATORY> 0
<PREFERRED> 0
<COMMON> 0
<OTHER-SE> 5,121,013
<TOTAL-LIABILITY-AND-EQUITY> 5,121,013
<SALES> 0
<TOTAL-REVENUES> 1,063,114
<CGS> 0
<TOTAL-COSTS> 651,048
<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> 543,035
<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 INCLUDED AS PART OF ITS
QUARTERLY REPORT ON FORM 10-Q FOR THE PERIOD 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] 535,430
[SECURITIES] 0
[RECEIVABLES] 193,815
[ALLOWANCES] 0
[INVENTORY] 0
[CURRENT-ASSETS] 729,245
[PP&E] 9,996,683
[DEPRECIATION] 5,483,669
[TOTAL-ASSETS] 5,242,259
[CURRENT-LIABILITIES] 0
[BONDS] 0
[PREFERRED-MANDATORY] 0
[PREFERRED] 0
[COMMON] 0
[OTHER-SE] 5,242,259
[TOTAL-LIABILITY-AND-EQUITY] 5,242,259
[SALES] 0
[TOTAL-REVENUES] 827,365
[CGS] 0
[TOTAL-COSTS] 490,241
[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] 437,528
[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] 638,152
[SECURITIES] 0
[RECEIVABLES] 182,469
[ALLOWANCES] 0
[INVENTORY] 0
[CURRENT-ASSETS] 820,621
[PP&E] 10,238,209
[DEPRECIATION] 5,475,139
[TOTAL-ASSETS] 5,583,691
[CURRENT-LIABILITIES] 0
[BONDS] 0
[PREFERRED-MANDATORY] 0
[PREFERRED] 0
[COMMON] 0
[OTHER-SE] 5,583,691
[TOTAL-LIABILITY-AND-EQUITY] 5,583,691
[SALES] 0
[TOTAL-REVENUES] 563,250
[CGS] 0
[TOTAL-COSTS] 330,776
[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] 308,796
[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] 610,985
[SECURITIES] 0
[RECEIVABLES] 244,258
[ALLOWANCES] 0
[INVENTORY] 0
[CURRENT-ASSETS] 855,243
[PP&E] 10,480,964
[DEPRECIATION] 5,461,215
[TOTAL-ASSETS] 5,874,992
[CURRENT-LIABILITIES] 0
[BONDS] 0
[PREFERRED-MANDATORY] 0
[PREFERRED] 0
[COMMON] 0
[OTHER-SE] 5,874,992
[TOTAL-LIABILITY-AND-EQUITY] 5,874,992
[SALES] 0
[TOTAL-REVENUES] 291,622
[CGS] 0
[TOTAL-COSTS] 166,585
[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] 162,583
[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 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] 723,464
[SECURITIES] 0
[RECEIVABLES] 173,380
[ALLOWANCES] 0
[INVENTORY] 0
[CURRENT-ASSETS] 896,844
[PP&E] 10,698,144
[DEPRECIATION] 5,430,138
[TOTAL-ASSETS] 6,164,850
[CURRENT-LIABILITIES] 0
[BONDS] 0
[PREFERRED-MANDATORY] 0
[PREFERRED] 0
[COMMON] 0
[OTHER-SE] 6,164,850
[TOTAL-LIABILITY-AND-EQUITY] 6,164,850
[SALES] 0
[TOTAL-REVENUES] 1,125,314
[CGS] 0
[TOTAL-COSTS] 687,542
[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] 562,476
[EPS-PRIMARY] 0
[EPS-DILUTED] 0
[ARTICLE] 5
[LEGEND]
THIS SCHEDULE CONTAINS SUMMARY 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] 615,636 631,070 643,119
[SECURITIES] 0 0 0
[RECEIVABLES] 260,538 238,770 234,579
[ALLOWANCES] 0 0 0
[INVENTORY] 0 0 0
[CURRENT-ASSETS] 876,174 869,840 877,698
[PP&E] 11,413,014 11,201,800 10,947,329
[DEPRECIATION] 5,328,924 5,382,529 5,408,540
[TOTAL-ASSETS] 6,960,264 6,689,111 6,416,487
[CURRENT-LIABILITIES] 0 0 0
[BONDS] 0 0 0
[PREFERRED-MANDATORY] 0 0 0
[PREFERRED] 0 0 0
[COMMON] 0 0 0
[OTHER-SE] 6,960,264 6,689,111 6,416,487
[TOTAL-LIABILITY-AND-EQUITY] 6,960,264 6,689,111 6,416,487
[SALES] 0 0 0
[TOTAL-REVENUES] 286,365 578,641 844,529
[CGS] 0 0 0
[TOTAL-COSTS] 172,841 346,595 515,294
[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] 158,600 295,670 426,043
[EPS-PRIMARY] 0 0 0
[EPS-DILUTED] 0 0 0
[ARTICLE] 5
[LEGEND]
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE
SHEET 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 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] 669,932
[SECURITIES] 0
[RECEIVABLES] 283,701
[ALLOWANCES] 0
[INVENTORY] 0
[CURRENT-ASSETS] 953,633
[PP&E] 11,525,846
[DEPRECIATION] 7,262,126
[TOTAL-ASSETS] 0
[CURRENT-LIABILITIES] 0
[BONDS] 0
[PREFERRED-MANDATORY] 0
[PREFERRED] 0
[COMMON] 0
[OTHER-SE] 7,262,126
[TOTAL-LIABILITY-AND-EQUITY] 7,262,126
[SALES] 0
[TOTAL-REVENUES] 1,510,499
[CGS] 0
[TOTAL-COSTS] 709,845
[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] 948,437
[EPS-PRIMARY] 0
[EPS-DILUTED] 0
[ARTICLE] 5
[LEGEND]
THIS SCHEDULE CONTAINS SUMMARY INFORMATION EXTRACTED FROM THE BALANCE SHEETS AT
MARCH 31, 1996, JUNE 30, 1996 AND SEPTEMBER 30, 1996 (UNAUDITED) AND THE
STATEMENT OF OPERATIONS FOR THE QUARTERLY PERIODS 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] 731,025 687,208 804,961
[SECURITIES] 0 0 0
[RECEIVABLES] 436,186 479,088 354,926
[ALLOWANCES] 0 0 0
[INVENTORY] 0 0 0
[CURRENT-ASSETS] 1,167,211 1,166,296 1,159,887
[PP&E] 12,011,539 11,773,836 11,639,919
[DEPRECIATION] 4,932,411 5,001,861 5,111,441
[TOTAL-ASSETS] 8,246,339 7,938,271 7,688,365
[CURRENT-LIABILITIES] 1,080 0 0
[BONDS] 0 0 0
[PREFERRED-MANDATORY] 0 0 0
[PREFERRED] 0 0 0
[COMMON] 0 0 0
[OTHER-SE] 8,245,259 7,938,271 7,688,365
[TOTAL-LIABILITY-AND-EQUITY] 8,246,339 7,938,271 7,688,365
[SALES] 0 0 0
[TOTAL-REVENUES] 456,311 841,084 1,206,121
[CGS] 0 0 0
[TOTAL-COSTS] 181,295 359,928 537,810
[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] 321,074 544,698 777,642
[EPS-PRIMARY] 0 0 0
[EPS-DILUTED] 0 0 0