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SUBJECT:        Monthly Raob Data Report of Manual Quality Control


The Raob Report for June, 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 28 U.S. stations (Blocks 72 and 74) were cited at least
once; 6 were cited at least twice; and 2 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
                    72764/BIS   1               4        5

BIS reported ground equipment failures on the for all cycles on the 4th and 5th.  

(2)  Reports from 32 stations in blocks 04, 70, 71, 76, 78 and 91 were cited
at least once; 24 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
                    76458/MZT                  31       31
                    76654/MZL   1              25       26
                    76256/GYM                  13       13
                    76526/ZAC  10                       10
                    76679/MEX   9   1                    9*
                    76805/ACA                   8        8
                    78897/PTP   5                        5
                    91765/PPG   5                        5
                    76644/MID                   4        4
                    78384/GCM   2               2        4
                    78397/KIN   3                   1    4

Frequent flight equipment failures continue for MZT, MZL, GYM, and ACA.
Station MID also had a few flight equipment failures in the first half of the 
month.  The baseline errors that resulted in frequent manual deletions of 
height and temperature data for ZAC and MEX also continue.  Wet bulb effect
is the most common cause of temperature and moisture deletions at both PTP and 
PPG.   Finally, spurious winds were the reason for manual deletions at both
GCM and KIN.

* 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/