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 27 U.S. stations (Blocks 72 and 74) were cited at least
once; 13 were cited at least twice; and 6 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
                    72208/CHS   1              44       44*
                    72318/RNK                  21       20*
                    72202/MFL   4                        4
                    72403/LWX                   4        4

Station LWX reported a handful of ground equipment failures in March.  Meanwhile,
stations CHS reported ground equipment failures throughout March, and RNK reported
ground equipment failures in the 2nd half of the month due to shortages of helium
supplies.  Finally, all manual deletions flagged in this report were due to super-
adiabatic lapse rates. 

(2)  Reports from 45 stations in blocks 04, 70, 71, 76, 78 and 91 were cited
at least once; 23 were cited at least twice; and 13 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
                    76405/LAP                  49       48*
                    78988/CUR                  22       22
                    76644/MID                  18       18
                    76692/HYY   1   1          14       15*
                    70026/BRW                  15       14*
                    76743/VHA   1               8   1   10
                    70361/YAK                   9        9
                    91376/MAJ                   5        5
                    76679/MEX                   1   3    4
                    91348/PNI   4                        4

Stations LAP, MID, HYY, and VHA reported flight equipment failures throughout
March, and stations CUR, YAK, MAJ, and MEX reported ground equipment failures.
Station BRW reported a mix of both types of failures.  With the exception of one
baseline error related deletion of heights at HYY, the rest of the manual
deletions noted here were due to super-adiabatic lapse rates. 

* 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/pmb/qap/raobqc/