<ARTICLE> 5 <PERIOD-TYPE> YEAR <FISCAL-YEAR-END> DEC-31-1998 <PERIOD-START> JAN-01-1998 <PERIOD-END> DEC-31-1998 <CASH> 4,762,386 <SECURITIES> 162,273 <RECEIVABLES> 2,995,809 <ALLOWANCES> 0 <INVENTORY> 0 <CURRENT-ASSETS> 7,920,468 <PP&E> 13,565,114 <DEPRECIATION> 13,395,899 <TOTAL-ASSETS> 8,089,683 <CURRENT-LIABILITIES> 2,763,008 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 0 <OTHER-SE> 5,326,675 <TOTAL-LIABILITY-AND-EQUITY> 8,089,683 <SALES> 0 <TOTAL-REVENUES> 2,366,220 <CGS> 0 <TOTAL-COSTS> 0 <OTHER-EXPENSES> 1,785,477 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 580,743 <INCOME-TAX> 0 <INCOME-CONTINUING> 580,743 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 580,743 <EPS-PRIMARY> 0 <EPS-DILUTED> 0