-90               -60               -30                 0                30                60                90Lat
   |_________________|_________________|_________________|_________________|_________________|_________________ LON
                                                                                                                 0E
                                                              0  0  0  0  0  0  0  2  2
                                                        0  0  0  0  0  0  0  0  0  1  4  3  3  3
              0                             0  0  0  0  1  2  0  0  0     0  0  0  6  7              6  2
                                      2  2  0  0  0  1  0  1  0  0  0     0  0  0  2  5  4  2  2  1
                                      0  0  0  0  0  2  8  1  0  0     0  0  0  0  6  4                    8
                                      0  0  0  0  0  0  0  1  0  0  0     0  0  0  1  5  2  2  1  1
                                                                                                                30E
              4                       0  0  1  0  0  0  0  0  0  0  0  0  0  0  0  1  3              2 10
                 1           0              0  1  0  0  0  0  1  0  0  0  0  0  0  0  3  3  1  1  1
                                            0  0  0     0  0  0  0  0  0  0  0  0  3  2
                 0                       0  1  0  0  0     0  0  0  0  0  0  0  2  2  2  2  1  1  2
              1              4                 0  0              0  0  0  0  0  0  1  1              6
                                            0  0  0     0              0  0  0  1  1  1  1  1  1  2
                                                                                                                60E
                                               0                          0  0  1  1  1                    4
                 0                                                     0  0  0  1  1  1  1  0  0  3
              0              0                       0  0  0  0  0  0  0  0  0  0  1  1              4  3
                 0                 0                          0  0  0  0  0  0  0  1  1  0  0  0  1
                                                              0  0  0  0  1  0  0  0  0
                                                                       0  1  0  0  0  0  1  0  0  0
                                                                                                                90E
                                                              0  0  0  0  0  0  0  0  0              2  5
                 0                                0        0  0  0  1  3  3  0  0  0  0  1  0  1  0
                                                        0  0  0  0  0  3  4  0  1  0  0
                                                  0  0  0  0  0  0  0  0  3  1  0  0  0  1  1  0  0
           0                             0  0        0  1  0  0     0  0  3  2  2  0  0              1  3
                 0                    0  0  0        0  0  0  0  0  0  1  5  4  2  0  0  1  1  0  0
                                                                                                               120E
                                      0  0     0  0  0  0  0  0  0  1  2  4  1  3  1  0
                                      0  0     0  0  0  0  0  0  0     0  0  1  1  2  0  1  1  1  0
                                      0  0  0  0  0  0  0     0           0  1  1  3  0              2  2
                                   0  0  0  0  0  0     0     0  0           1  1  3  3  2  1  0  0
                                   1  0  0  0  0  0  0  0     0  0     0  0     1  2  4
                 3              0  1  0  0  0  0     0  0     0     0             11  4  3  2  1  0
                                                                                                               150E
                                   0  0  0  0     0     0  0  0        0             18              2  3
                 2        3           0        0     0     0  0                          5  3  1  0
                                            0  0  0  0        0
                          0  0           0  0  0  0     0     0     0                    0  3  1  2
           2                 2  0  0  6     1              0  0                                      6
     1                          0  0           0  0  0  0                               14     2  2
   |-----------------|-----------------|-----------------|-----------------|-----------------|-----------------180E
                                1        0  0  0  0                       0
                                               0  0  0  0                                2  4  3  4
                                               0  0                 0                                5
                                               0  0                                         1  2  3
                                            0  0     0     0        0  7
                                               0                                            4  1 16
                                                                                                               210E
                                            0  0  0                                                  5
                                         0     0                                               2  8
                                            0     0  0
                                         3  0                                            3  2  1  4
              1                                                                       2              3
                                                                             0  2  3  1  3  3  2  5
                                                                                                               240E
                                                                          0  0  1  1  2
                                                                    0  0  0  0  1  1  1  2  1  1  2
                                         0                             0  0  0  0  3  2                 1
                                                                    0  1  0  1  2  2  1  1  2  1  4
        1                                                           1  1  1  0  1  2  1                    1
                                                        0        0  2     1  1  1  2  2  1  2  3  5
                                                                                                               270E
          19                                            0        0  0  1     1  1  2  3              3
                                                     0  0     0  0  0  0  1  1  2  2  4  2     3 15
                             0        0        0  0  0  0  0  0  0  0  0  0     1  2  2
                          0  0  1  2  2  1  0  0  0  2  0  0  0  0  0  0        5 11  2  3  3  3 16
              3              0  0  0  0  0  0  0  0  0  1  1  0  0  0             12  3              1  2
                 5  3  0  0     0  1  0  0  0  1  0  0  0  0  0  0  0        0     6  4  5  3  5 15
                                                                                                               300E
                                   1  0  0  1  0  0  1  0  0  0  0                   10                    2
                    2     0           1  1  0  0  0  3  0  0  0                       5  9     6  5
           0                             1  0  0  0  0  0                                            6
                    2                       0  0  0  0  0                                      7 10
                                               0  0  0  0
                          2                          0  0                       0                 6
                                                                                                               330E
           3                                0                                   0                    4
                       1                                         0  0                          3  3
                                                                 0  0  0  1  0                             9
                                   0                 0        0  0  0  0  0              0     2  4
              2                 0              3           0  0  0  0     0  0  1  2  3              9  5
                                                           0  0  0  0     0  0  0  1  1  2  1  7
   |_________________|_________________|_________________|_________________|_________________|_________________360E
 -90               -60               -30                 0                30                60                90N

    Figure 6a. Global distribution of occurrence of N=9 (f9,%) in light type reports for
        1982-1991 land data.  Average of 843 5c- grid boxes with 25 or more reports is 1.1%.



 -90               -60               -30                 0                30                60                90Lat
   |_________________|_________________|_________________|_________________|_________________|_________________ LON
                                                                                                                 0E
                             5  5  1  0  0  0  0  0  0  0  1  1                 0  1  3
                 2  7  8  8  3  2  1  0  0  0  0  0  0  0  1  1                 0  0     5  4  3  2
                             2  2  1  0  1  2  2  0  0  1                    0  0  1  2              6  9
                 2  1  6  9  6  0  0  1  9                                   0  0  1     4  5 20  3
                             7  2  0  1                                      0  0  2                      11
                 2  2  0  6 10  0  0  1                                      0  0  2  2     5 13 14
                                                                                                                30E
                             7  3  0  0  0  0  0                          0  0  0  3  3              5 15
                 2  4  5 11  7  4  1  0  0  0  0     0  0           0  0  0  0  0  3  6        3  6
                             7  2  1  0  0  0  0  0  0  0  0     0  0  0           3
                 7  9 14 12 13  4  2  0  0  0  1  0  0  0  0  0  0        0  4  1  3 11        5  8
                            12  5  1  0  0  0  0  0  0  0  0  0  0  0  0  0     1  2 22             10 16
                10  5  3  3 10  4  1  0  0  0  0  0  0  0  0  0  0  0  0  0                       7
                                                                                                                60E
                             9  2  1  0  0  0  0  0  0  1  0  0  0  0  0  3                               15
                 6  6  3  8 11  3  1  1  0  0  0  0  0  1  0  0  0  0  0  3                       6
                             9  3  2  0  0  0  0  0  0  0  0  0  0  0  1                            11 16
                 5  6  8  8  8  2  1  0  0  0  0  0  0  0  0  0  1                                4
                            13  1  1  1  0  0  0  0  0  0  0  0  0  1
                 7  5  6  6  7  3  1  0  0  0  0  0  0  0  0  0  0  1  0
                                                                                                                90E
                             5  1  2  0  0  0  0  0  0  0  0  0  0  0  0                            10 14
                 8  7  4  9  7  4  1  0  0  0  0  0  0  0  0  0  0  0
                             3  2  1  0  0  0  0  0  0  1  0  0  0                                         5
                 3  8  2  7  4  4  1  0  0  0  0  0  0  0  0  0  0  1  3
                             4  1  1  0  0  0  0  0  0  0  0  0  0  0  1                             5 10
                 9 11  5  6  5  1  0  0     0  0  0  0  0  0  0  0  0  1  1  2  2
                                                                                                               120E
                             4  2  0  0        0  0  0  0  0  0  0  0  1  2  4  3  3
                25 12  6  0  2  1  0  1           0  0  0  0  0  0  0  0  1  2  2  8
                             5  0  0  0           0  0  0  0  0  0  0  0  1  1  4  7                 8  8
                19 22 12  4  1  1  0  0        1  0  0  0  0  0  0  0  0  1  1  4  8  9 26 14
                             2  0  0           0  0  0  0  1  1  0  0  0  1  1  3  9 11                    5
                17  9  3  4  1  1  0        0  0  0  0  0  1  0  0  0  0  1  2  4 17 15 17 11
                                                                                                               150E
                             2  1  0  0  0  0  0  0  0  0  0  0  0  0  0  1  2  4 16 20             16  4
                16 16  9  4  3  1  0  0  0  0  0  0  0  0  1  1  0  0  0  1  2  5 15 19 10 11  9
                             2  1  0  0  0  0  0  1  0  1  1  1  1  0  0  1  2  5 16 22
                22 16 10  4  4  1  0  0  0  0  0  0  1  0  0  1  0  0  0  1  2  6 16 23 12  6  4  7
           4  7              3  1  1  0  1  0  0  0  1  1  2  1  1  0  0  0  3  6 14 22             10  3
                17 12  9  4  4  1  0  0  1  1  0  0  0  1  3  1  1  1  0  0  2  6 14 20 14  7 11 15           2
   |-----------------|-----------------|-----------------|-----------------|-----------------|-----------------180E
                             2  2  0  1  0  0  0  0  0  0  1  2  0  0  0  1  2  6 13 18                    3
                12 12  7  0  1  2  0  1  1  0  0  0  0  1  1  1  0  0  0  0  2  5 13 17 13 10 15 15
           4  8              2  3  1  0  0  0  0  0  0  0  0  1  1  0  0  1  2  6 12 17              9  3
                14 18 13  5  3  2  1  1  0  0  0  0  0  0  0  1  1  0  0  1  2  6 12 16 11  9 10 10
                             5  3  3  1  1  1  0  0  0  0  0  1  1  0  0  0  1  5 12 16
                18 29 16  2  3  4  3  0  1  0  0  1  0  0  0  0  0  0  0  0  1  5 11 15 13  6  2
                                                                                                               210E
           6 13              3  3  4  1  0  0  0  0  0  0  0  0  0  0  0  0  1  4 10 14              8  0
                17 35 20  6  9  4  2  1  0  0  0  0  0  0  0  2  0  0  0  0  1  3  8 12 12  5  5  9
                             5  3  5  1  1  0  0  0  0  0  0  1  0  0  0  0  0  2  5 10                    3
                19  6 11  3  4  5  3  2  0  0  0  0  0  0  0  2  0  0  0  0  1  2  4  7  7  5     2
              9              7  7  5  0  0  0  0  0  0  0  0  1  1  0  0  0  1  3  5  5              2  0
                13  3 10  2  3  6  2  2  0  0  0  0  0  0  0  1  1  0  0  0  2  5  6  4  5       12
                                                                                                               240E
                             3  4  2  1  0  0  0  0  0  0  0  0  0  0  0  1  1
                14 11  2  4  6 10  4  1  0  0  0  0  0  0  0  1  1  0  0  1  1                    3
             17              5  8  7  0  0  1  0  0  0  0  0  1  0  0  0  1                          6  6
                13 13  3  3  6  4  6  1  0  0  0  0  0  0  0  1  0  0                             4
                             3  6  2  0  0  1  0  0  0  0  0  1  0  0  1  1                                3
                18  4  1  3  1  4  1  1  1  1  0  0  0  0  0  0  0  0  0  1          43    10 22  5
                                                                                                               270E
             14              4  3  1  1  1  0  0  0  0  0  0  0  0  0  0  0  2    37 52              6  9
                23  1  0  5  4  3  1  1  0  0  0  0  1  0  1  1  0  0  0  0  1    30 38  7  9 12  7
                             3  3  1  0  0  0  0  1  1     0  0  0  0  0  0  1  3 17 36
                11  7  4  7  1  1  2  1  0  0  0                 0  0  0  0  1  2  8 13 12 24 10 10
              0              1  0                                0  0  0  0  0  1 23 23             12 14
                 3  7  3  1  5  1  1                          1  0  0  0  0  0  1 18 23 26  9 11 11
                                                                                                               300E
                             5  6  2  2                       0  0  0  0  0  0  1 13 24                    2
                11 15 10  4  3  2  2  2                    1  0  0  0  0  0  0  1  9 21 17 13  9  9
           2                 4  2  1  1  1  1           0  0  0  0  0  0  0  0  1  9 21             11  9
                17 20 18 18  5  4  1  1  0  0           0  0  1  0  0  0  0  0  1  2 11 12 10  5
                             9  2  1  1  0  0  0  0  0  0  0  0  0  0  0  0  0  0  2  5
                 4 12  9 14 10  5  4  2  0  0  0  0  0  0  0  1  0  0  0  0  0  1  2  4  9 13 10  8
                                                                                                               330E
           1  0             12  5  1  1  0  0  0  0  0  0  0  0  0  0  1  0  0  1  1  3              6 13
                 5  4  4  9 12  4  2  1  0  0  0  0  0  0  1  2  2  1  0  0  0  1  1  3  5  3  6 14
                             9  4  1  0  1  0  0  0  0  0  1  1  1  1  2  0  0  0  2  2                   14
                 4  7  7 10  7  6  3  0  1  0  0  0  0  0  0  1  1        1  0  1  2  2  4  2  8 19
              1              4 14  2  1  0  0  0  0  0  0  1  1           1  1  1  2  2             12 11
                 1  6  3  6  6  7  2  0  0  0  0  0  0  0  1  1                 1  1  3  2  3  7 10
   |_________________|_________________|_________________|_________________|_________________|_________________360E
 -90               -60               -30                 0                30                60                90N

    Figure 6b. Global distribution of occurrence of N=9 (f9,%) in light type reports for
        1982-1991 ship data.  Average of 1501 5c-grid boxes with 25 or more reports is 3.3%.