WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

  

<ARTICLE> 5
       
                                                  
<PERIOD-TYPE>                   YEAR                   QTR-3
<FISCAL-YEAR-END>                          DEC-31-1993             DEC-31-1994
<PERIOD-END>                               DEC-31-1993             SEP-30-1994
<CASH>                                         1870476                 1230353
<SECURITIES>                                         0                       0
<RECEIVABLES>                                   478536                  387321
<ALLOWANCES>                                    113000                   60000
<INVENTORY>                                          0                       0
<CURRENT-ASSETS>                               2236012                 1557674
<PP&E>                                        18020996                16320739
<DEPRECIATION>                                11753129                10910014
<TOTAL-ASSETS>                                 8503879                 6968399
<CURRENT-LIABILITIES>                           719470                  683901
<BONDS>                                         591954                  237226
<COMMON>                                             0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<OTHER-SE>                                     7192455                 6047272
<TOTAL-LIABILITY-AND-EQUITY>                   8503879                 6968399
<SALES>                                              0                       0
<TOTAL-REVENUES>                               2652999                 1666809
<CGS>                                                0                       0
<TOTAL-COSTS>                                        0                       0
<OTHER-EXPENSES>                               2206888                 1082132
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                               58308                   21783
<INCOME-PRETAX>                                      0                       0
<INCOME-TAX>                                         0                       0
<INCOME-CONTINUING>                             387803                  562894
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                    387803                  562894
<EPS-PRIMARY>                                        0                       0
<EPS-DILUTED>                                        0                       0