SUBJECT:        Monthly Raob Data Report of Manual Quality Control


The Raob Report for May, 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 32 U.S. stations (Blocks 72 and 74) were cited at least
once; 16 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
                    72248/SHV                   4        4
                    72493/OAK               2            2

There were no significant issues with Group 1 during May.


(2)  Reports from 38 stations in blocks 04, 70, 71, 76, 78 and 91 were cited
at least once; 19 were cited at least twice; and 14 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
                    76256/GYM                  24       24
                    78073/NAS   2              12       14
                    78866/SXM                  13       13
                    76805/ACA                   7        7
                    76394/MTY   3   1           2        5*
                    76654/MZL                   4   1    5
                    91765/PPG   4                   1    5
                    70026/BRW                   3   1    4
                    70316/CDB   2           2            4
                    76692/HYY   1               2   1    4
                    78988/CUR                   4        4

Several stations in Group 2 have continued with occasional to frequent
outages during May.  All four cases of deleted data with PPG involved
super-adiabatic lapse rate layers usually caused by the wet-bulb effect.
Not shown above, Bermuda (78016/BDA) continues to be cited almost daily
for "no Part B."  Actually BDA has been sending TTBB but not PPBB, and
significant wind data has not been included within TTBB.


* 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/