AVAILABLE ALL-SKY DATA IN 1998

                                             number of observation hours


 STATION          JAN    FEB    MAR    APR    MAY    JUN    JUL    AUG    SEP    OCT    NOV    DEC   YEAR   films (*)

 OULU               0      0      0      0      0      0      0      0      0      0      0      0      0       0
 SODANKYLA          0      0      0      0      0      0      0      0      0      0      0      0      0       0
 MUONIO             0      0      0      0      0      0      0      0      0      0      0      0      0       0
 IVALO              0      0      0      0      0      0      0      0      0      0      0      0      0       0

 KEVO             126    174    164      6      0      0      0      0      0      0      0      0    470       9
 HANKASALMI         0      0      0      0      0      0      0      0      0      0      0      0      0       0
 KILPISJARVI        0      0      0      0      0      0      0      0      0      0      0      0      0       0
 KIRUNA             0      0      0      0      0      0      0      0      0      0      0      0      0       0

 TROMSO             0      0      0      0      0      0      0      0      0      0      0      0      0       0
 HORNSUND          37     99     46      0      0      0      0      0      0      0      0      0    182       3
 ANDOYA             0      0      0      0      0      0      0      0      0      0      0      0      0       0
 GEORG FORSTER      0      0      0      0      0      0      0      0      0      0      0      0      0       0
 __________________________________________________________________________________________________________________
 ALL STATIONS     163    273    210      6      0      0      0      0      0      0      0      0    652      12


 (*) analyzed films per year