SUBJECT:        Monthly Raob Data Report of Manual Quality Control


The Raob Report for August, 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 18 U.S. stations (Blocks 72 and 74) were cited at least
once; 8 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
                    72265/MAF                  22       22
                    72340/LZK   1   1           5        6*
                    72776/TFX   5                        5
                    72764/BIS   1               3        4

Station MAF reported ground equipment failures throughout August.  Station BIS
reported ground equipment failures from August 1st through 3rd.  Station LZK also
reported ground equipment failures sporadically during the first week of August, as
well as a power failure on August 15th.  Finally, from August 2nd through 4th,
station TFX reported an instrument error that resulted in spurious surface wind
directions.  They requested the manual deletions of those surface winds until the
instrument issue was resolved.

(2)  Reports from 34 stations in blocks 04, 70, 71, 76, 78 and 91 were cited
at least once; 20 were cited at least twice; and 12 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
                    78384/GCM                  54       54
                    70316/CDB   1               6        7
                    76526/ZAC                   4   1    5
                    76692/HYY   2   2           1   2    6*
                    71907/YPH   4                        4
                    76405/LAP                   1   3    4
                    76644/MID   2               2        4

Station GCM reported ground equipment failures throughout the month.  In addition,
station CDB reported ground equipment failures on August 13th through 18th, and
station ZAC reported the same sporadically during the middle third of the month. 
Station MID reported flight equipment failures at both 00Z and 12Z on August 26th.
Baseline errors were observed a couple times in August at station HYY resulting in
the deletions of all heights.  Finally, at station YPH, all deletions occurred on
August 14th through 17th, and they were all caused by super-adiabatic lapse rates
resulting in deletions of temperatures and heights.


* 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 . . .
https://www.nco.ncep.noaa.gov/omb/dataqc/