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SUBJECT:        Monthly Raob Data Report of Manual Quality Control


The Raob Report for October, compiled from the Raob Recap statements in the
SDM logs, which does not necessarily include data that were rejected by
automated computer generated quality control, indicates the following:

(1)  Reports from 35 U.S. stations (Blocks 72 and 74) were cited at least
once; 14 were cited at least twice; and 4 were cited at least three times.
Of those, the following were cited more than three times or had two or more no
reports:

                    STATION__ DEL BAS COR XRP EFL SHO TOTAL
                    72402/WAL   6                        6
                    72456/TOP   6                        6

Manual deletions at both WAL and TOP were for temperatures and moisture as a
result of super-adiabatic lapse rates at those sites.

(2)  Reports from 45 stations in blocks 04, 70, 71, 76, 78 and 91 were cited
at least once; 28 were cited at least twice; and 15 were cited at least three
times.  Of those, the following were cited more than three times or had two or
more no reports:

                    STATION__ DEL BAS COR XRP EFL SHO TOTAL
                    76692/HYY                  54       54
                    76458/MZT   1              32       33
                    78988/CUR  17   4           5       23*
                    76225/CUU                  20       20
                    76405/LAP                  16       16
                    76654/MZL                  15       15
                    71816/YYR                       9    8*
                    78073/NAS                   7   1    8
                    91165/LIH   5                   1    6
                    78384/GCM                   4   1    5
                    78486/SDQ   4                        4

Flight equipment failures occurred throughout the month of October at HYY, MZT,
LAP, and MZL.  Flight equipment failures also occurred during the 2nd half of
the month at CUU and at NAS on the 5th and the 15th through the 18th.  At CUR
ground equipment failures occurred on the 26th, 29th, and 31st, and at GCM,
ground equipment failures occurred on the 25th, 26th, and 31st.  There were
numerous short flights at station YYR throughout October.  Many of those short
flights terminated below 600mb.  Regarding manual deletions, there were a
variety of reasons for deletions at station CUR, but a majority of the QC
actions were due to high heights and warm temperatures throughout the month.
Super-adiabatic lapse rates were the most common reason for manual deletions of
temperatures and moisture at station LIH.  Finally, three of the four deletions
at SDQ were due to spurious heights above 150mb.  

* The total differs from the sum of the itemized citations
  because of multiple citations in the same raob(s).


Citation Codes Key:
DEL  All or part of the raob was flagged for deletion.
BAS  A baseline hgt/station press error was corrected or purged.
COR  At least one correction other than baseline was made.
XRP  Station sent no report at all when one was required.
EFL  Equipment failure (codes 10142, 10144, 10158, etc.)
SHO  Raob flight was short; ie, to less than 400 mb.


This and related reports are available on the Web at . . .
http://www.nco.ncep.noaa.gov/sib/qap/raobqc/