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> 1,858,833
<SECURITIES> 0
<RECEIVABLES> 830,947
<ALLOWANCES> 0
<INVENTORY> 0
<CURRENT-ASSETS> 2,689,780
<PP&E> 52,861,434
<DEPRECIATION> 16,622,403
<TOTAL-ASSETS> 38,928,811
<CURRENT-LIABILITIES> 0
<BONDS> 0
<PREFERRED-MANDATORY> 0
<PREFERRED> 0
<COMMON> 0
<OTHER-SE> 38,928,811
<TOTAL-LIABILITY-AND-EQUITY> 38,928,811
<SALES> 0
<TOTAL-REVENUES> 4,826,207
<CGS> 0
<TOTAL-COSTS> 3,207,587
<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> 1,740,032
<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] 1,712,372
[SECURITIES] 0
[RECEIVABLES] 1,010,405
[ALLOWANCES] 0
[INVENTORY] 0
[CURRENT-ASSETS] 2,722,777
[PP&E] 52,922,940
[DEPRECIATION] 15,872,003
[TOTAL-ASSETS] 39,773,714
[CURRENT-LIABILITIES] 0
[BONDS] 0
[PREFERRED-MANDATORY] 0
[PREFERRED] 0
[COMMON] 0
[OTHER-SE] 39,773,714
[TOTAL-LIABILITY-AND-EQUITY] 39,773,714
[SALES] 0
[TOTAL-REVENUES] 3,742,036
[CGS] 0
[TOTAL-COSTS] 2,401,972
[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] 1,433,096
[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] 1,839,760
[SECURITIES] 0
[RECEIVABLES] 1,014,904
[ALLOWANCES] 0
[INVENTORY] 0
[CURRENT-ASSETS] 2,854,664
[PP&E] 52,984,438
[DEPRECIATION] 15,119,939
[TOTAL-ASSETS] 40,719,292
[CURRENT-LIABILITIES] 0
[BONDS] 0
[PREFERRED-MANDATORY] 0
[PREFERRED] 0
[COMMON] 0
[OTHER-SE] 40,719,292
[TOTAL-LIABILITY-AND-EQUITY] 40,719,292
[SALES] 0
[TOTAL-REVENUES] 2,655,403
[CGS] 0
[TOTAL-COSTS] 1,602,399
[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] 1,122,121
[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] 1,623,157
[SECURITIES] 0
[RECEIVABLES] 1,103,093
[ALLOWANCES] 0
[INVENTORY] 0
[CURRENT-ASSETS] 2,726,250
[PP&E] 53,024,536
[DEPRECIATION] 14,359,942
[TOTAL-ASSETS] 41,391,374
[CURRENT-LIABILITIES] 0
[BONDS] 0
[PREFERRED-MANDATORY] 0
[PREFERRED] 0
[COMMON] 0
[OTHER-SE] 41,391,374
[TOTAL-LIABILITY-AND-EQUITY] 41,391,374
[SALES] 0
[TOTAL-REVENUES] 1,308,168
[CGS] 0
[TOTAL-COSTS] 807,236
[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] 537,650
[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] 1,576,719
[SECURITIES] 0
[RECEIVABLES] 1,036,015
[ALLOWANCES] 0
[INVENTORY] 0
[CURRENT-ASSETS] 2,612,734
[PP&E] 53,096,311
[DEPRECIATION] 13,606,842
[TOTAL-ASSETS] 42,110,227
[CURRENT-LIABILITIES] 0
[BONDS] 0
[PREFERRED-MANDATORY] 0
[PREFERRED] 0
[COMMON] 0
[OTHER-SE] 42,110,227
[TOTAL-LIABILITY-AND-EQUITY] 42,110,227
[SALES] 0
[TOTAL-REVENUES] 5,372,706
[CGS] 0
[TOTAL-COSTS] 3,227,927
[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] 2,285,497
[EPS-PRIMARY] 0
[EPS-DILUTED] 0
[ARTICLE] 5
[LEGEND]
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE
SHEET 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 PERIOD MARCH 31, 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] 1,109,967 1,215,001 1,267,674
[SECURITIES] 0 0 0
[RECEIVABLES] 1,160,480 1,052,809 1,162,767
[ALLOWANCES] 0 0 0
[INVENTORY] 0 0 0
[CURRENT-ASSETS] 2,270,447 2,267,810 2,430,441
[PP&E] 53,173,480 53,106,373 53,131,844
[DEPRECIATION] 11,331,881 12,091,152 12,843,837
[TOTAL-ASSETS] 44,478,657 43,580,270 42,946,315
[CURRENT-LIABILITIES] 0 0 0
[BONDS] 0 0 0
[PREFERRED-MANDATORY] 0 0 0
[PREFERRED] 0 0 0
[COMMON] 0 0 0
[OTHER-SE] 44,478,657 43,580,270 42,946,315
[TOTAL-LIABILITY-AND-EQUITY] 44,478,657 43,580,270 42,946,315
[SALES] 0 0 0
[TOTAL-REVENUES] 1,220,351 2,498,145 3,953,363
[CGS] 0 0 0
[TOTAL-COSTS] 866,839 1,741,075 2,600,417
[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] 407,871 844,654 1,467,252
[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] 1,730,504
[SECURITIES] 0
[RECEIVABLES] 1,173,515
[ALLOWANCES] 0
[INVENTORY] 0
[CURRENT-ASSETS] 2,904,019
[PP&E] 52,798,896
[DEPRECIATION] 10,575,957
[TOTAL-ASSETS] 45,562,941
[CURRENT-LIABILITIES] 0
[BONDS] 0
[PREFERRED-MANDATORY] 0
[PREFERRED] 0
[COMMON] 0
[OTHER-SE] 45,562,941
[TOTAL-LIABILITY-AND-EQUITY] 45,562,941
[SALES] 0
[TOTAL-REVENUES] 6,755,171
[CGS] 0
[TOTAL-COSTS] 3,454,634
[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] 3,495,007
[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 STATEMENT 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 PERIOD MARCH 31, 1996, JUNE 30, 1996
AND SEPTEMBER 30, 1996.
[/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] 1,628,325 1,427,492 1,594,839
[SECURITIES] 0 0 0
[RECEIVABLES] 1,163,029 1,308,851 1,537,736
[ALLOWANCES] 0 0 0
[INVENTORY] 0 0 0
[CURRENT-ASSETS] 22,791,354 2,736,343 2,748,575
[PP&E] 53,027,465 53,007,643 52,928,400
[DEPRECIATION] 8,310,326 9,073,702 9,832,173
[TOTAL-ASSETS] 48,152,591 47,245,010 46,350,157
[CURRENT-LIABILITIES] 274,040 182,040 91,040
[BONDS] 0 0 0
[PREFERRED-MANDATORY] 0 0 0
[PREFERRED] 0 0 0
[COMMON] 0 0 0
[OTHER-SE] 47,878,551 47,062,970 46,259,117
[TOTAL-LIABILITY-AND-EQUITY] 48,152,591 47,245,010 46,350,157
[SALES] 0 0 0
[TOTAL-REVENUES] 1,770,578 3,566,930 5,170,080
[CGS] 0 0 0
[TOTAL-COSTS] 866,190 1,730,751 2,598,158
[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] 967,659 1,932,192 2,669,028
[EPS-PRIMARY] 0 0 0
[EPS-DILUTED] 0 0 0