Table 4. Change Codes for Edited Cloud Reports
_________________________________________________________________________________________________________                                                                              
 
                                                                          Occurrence (% )       
                                                         ________________________________________________
                                                               Land                          Ocean 
IC* Case (brief description**)      Changes made#        all         light            all           light
_________________________________________________________________________________________________________                                                                              

  0                                 none##               88.2         88.2            84.4           84.2
  1  N=9 with ppt or fog            N=8; CL=10,11         1.5          1.5             3.7            3.5
                                    or CM=10
  2  Nh=0 with CM>0 and CL=0        Nh=N                  0.2          0.2             0.1            0.1
  3  Nh=N with CH>0 and CL=CM=0     Nh=                   0.1          0.1             0.3            0.4
  4  Nh<N where should be Nh=N      Nh=/                  0.4          0.4             0.9            0.9
  5  CL =/ with CM or CH            CM,CH =/              0.1          0.1             0.7            0.7
  6  CM or CH miscoded as 0         CM or CH =/           3.2          3.5             4.0            4.4
  7  CM=7,2 for Ns                  CM=11,12              3.7          3.5             1.3            1.4
  8  CM=/   for Ns                  CM=10                 2.4          2.2             1.9            2.0
  9  CM or CH miscoded as /         CM or CH =0           0.3          0.3             2.7            2.4
_________________________________________________________________________________________________________                                                                              
 
 *  Also order in which changes made.  IC=9 is recorded only if no previous
    change (possibly 7 or 8) occurred.
 ** See Table 3 for details.
  # The value "-1" is used to signify "/".
 ## Cases of N=0 for which Nh=CL=CM=CH=/ were set to 0 were not considered 
    to be changes.