Sky Obscured Due to Fog
Average Cloud Amount - Phase of Annual Cycle (Month of Maximum)
1954 - 1997, Ship Observations Only

Grid Box Averages
64 filled boxes
Box #   Lat.N   Lon.E   Phase
    2     85     180      7.4
    4     75      20      7.5
    5     75      60      6.9
    8     75     180      7.5
    9     75     220      7.7
   12     75     340      7.0
   13     65      10      6.6
   15     65      50      6.3
   21     65     170      6.6
   22     65     190      6.4
   23     65     210      7.2
   29     65     330      6.9
   30     65     350      7.3
   31     55      10      4.1
   32     55      30      2.9
   38     55     150      6.6
   39     55     170      6.8
   40     55     190      7.0
   41     55     210      6.8
   42     55     230      7.3
   46     55     310      6.9
   47     55     330      6.7
   51     45      25      2.9
   52     45      35      3.4
   53     45      45      4.3
   62     45     135      6.1
   63     45     145      6.5
   64     45     155      6.7
   65     45     165      6.8
   66     45     175      6.9
   67     45     185      7.0
   68     45     195      6.9
   69     45     205      6.9
   70     45     215      6.6
   71     45     225      5.8
   72     45     235      7.9
   77     45     285      5.9
   78     45     295      6.5
   79     45     305      6.1
   80     45     315      6.5
   81     45     325      6.9
   82     45     335      6.8
   96     35     115      6.3
   97     35     125      5.3
   99     35     145      6.1
  100     35     155      6.1
  101     35     165      6.1
  102     35     175      5.9
  103     35     185      5.8
  104     35     195      5.3
  105     35     205      5.0
  131     25     105      2.1
  367    -35     305      7.9
  377    -45      45      3.0
  380    -45      75      3.0
  397    -45     245      1.1
  404    -45     315      0.9
  405    -45     325     12.0
  417    -55     170      1.1
  419    -55     210     12.4
  420    -55     230      2.3
  421    -55     250      0.7
  424    -55     310     11.9
  425    -55     330     11.8