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SUBJECT:        Monthly Raob Data Report of Manual Quality Control


The Raob Report for March, 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; 10 were cited at least twice; and 3 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
                    NONE

There were no significant issues with any station in Group 1 during March.
While many stations had some data flagged for deletion due to wet-bulb effect,
no station had no more than three such citations during March.


(2)  Reports from 38 stations in blocks 04, 70, 71, 76, 78 and 91 were cited
at least once; 22 were cited at least twice; and 11 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                  40       40
                    76654/MZL   1              30       31
                    91413/YAP   1              22       23
                    76256/GYM                  19       19
                    78954/BGI   3               9       12
                    76805/ACA                   6        6
                    91165/LIH   3                   3    6
                    78866/SXM   3                   1    4
                    78988/CUR   3               1        4

There were no significant data quality issues with any station in Group 2 
during March.  Like recent months, most deletions were due to the wet-bulb
effect.  A few Mexico stations continue to report ongoing equipment outages.


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/