Table 9. Contents and Format of the 56-character EDITED CLOUD REPORT
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Number of Minimum Maximum
Item Description Abbreviation characters value value
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1 year,month,day,hour yr,mn,dy,hr 8 81120100 91113023
2 sky brightness indicator IB 1 0 1
3 latitude x100 LAT 5 -9000 9000
4 longitude x100 LON 5 0 36000
5 station number(land) or ID 5 01000 98999
source deck(ships) 110 999
6 land/ocean indicator LO 1 1 2
7 present weather ww 2 -1 99
8 total cloud cover N 1 0 8#
9 lower cloud amount Nh 2 -1 8
10 lower cloud base height h 2 -1 9
11 low cloud type CL 2 -1 11#
12 middle cloud type CM 2 -1 12#
13 high cloud type CH 2 -1 9
14 middle cloud amount* x100 AM 3 0 900
15 high cloud amount* x100 AH 3 0 900
non-overlapped amounts:*
16 middle cloud amount UM 1 0 9
17 high cloud amount UH 1 0 9
18 change code IC 2 0 9
19 solar altitude (deg x10) SA 4 -900 900
20 relative lunar illuminance x100 RI 4 -110 117
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# Cases of sky-obscured (N=9) due to fog (ww 10-12,40-49), thunderstorms (ww 80-99) or
drizzle/rain/snow (ww 50-75,77,79) have been converted to N=8 and CL=11 (fog) or CL=10
(thunderstorms) or CM=10 (Ns). Certain cases of CM=/ with drizzle/rain/snow have been
converted to CM=10 also. Cases of CM=2,7 with drizzle/rain/snow have been converted
to CM=12,11, respectively, to indicate Ns. Changes are coded in the IC parameter.
* Upper level cloud type amounts can be computed only when 2 or less levels are present.
AM and AH come from Nh, N, or the random-overlap equation and represent "actual"
cloud amount. UM and UH are the amounts visible (the non-overlapped amounts) and
come from Nh, N, or N-Nh. [Amounts are given in octa, AM and AH to two decimal places.]