<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE BALANCE
SHEETS 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 REPORTS ON FORM 10-Q FOR THE PERIOD MARCH 31, 1996, JUNE 30, 1996 AND
SEPTEMBER 30, 1996.
</LEGEND>

<S>                             <C>                     <C>                     <C>
<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>                                         688,321                 937,943                 762,501
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                  496,480                 405,294                 325,951
<ALLOWANCES>                                         0                       0                       0
<INVENTORY>                                          0                       0                       0
<CURRENT-ASSETS>                             1,184,801               1,343,237               1,088,452
<PP&E>                                       5,734,378               4,539,029               3,747,258
<DEPRECIATION>                               4,001,814               3,154,629               2,604,347
<TOTAL-ASSETS>                               2,917,365               2,727,637               2,231,363
<CURRENT-LIABILITIES>                                0                       0                       0
<BONDS>                                              0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                             0                       0                       0
<OTHER-SE>                                   2,917,365               2,727,637               2,231,363
<TOTAL-LIABILITY-AND-EQUITY>                 2,917,365               2,727,637               2,231,363
<SALES>                                              0                       0                       0
<TOTAL-REVENUES>                               206,817                 365,530                 522,541
<CGS>                                                0                       0                       0
<TOTAL-COSTS>                                    9,493                  18,436                  27,911
<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>                                   277,655                  57,598                 805,208
<EPS-PRIMARY>                                        0                       0                       0
<EPS-DILUTED>                                        0                       0                       0


</TABLE>