Table 9.   Reason codes associated with step "SYNDATA", program code 002 (last revised 6/1/2017).
 

KEY:
   IN "R.CODE" COLUMN:
                                      B - OCCURS ONLY IN GFS/GDAS, AND PREVIOUSLY NAM, VERSIONS OF SYNDATA (THE SYNDATA STEP DOES NOT RUN IN ANY OTHER NETWORKS).
   IN “MNEMONIC” COLUMN:
                                     ** - OBSERVATION OR QUALITY MARKER IS OBTAINED AS DEFINED IN EVENT MEANING.
 
 
R.CODE  MEANING MNEMONICS AFFECTED AND NEW VALUE FOR OBS, Q.M.
00 B  ORIGINAL BOGUS DATA CREATED BY THIS PROGRAM. PRC-> POB= **, PQM= 1
TRC-> TOB= **, TQM= 0
ZRC-> ZOB= **, ZQM= 0
WRC-> UOB,VOB= **, WQM= 0
01 B  BOGUS SPECIFIC HUMIDITY OBSERVATION AT STORM CENTER CREATED BY THIS PROGRAM (BASED ON AN ASSUMED RELATIVE HUMIDITY OF  99%) QRC-> QOB= **, QQM= 0
02 B REPORTED SURFACE PRESSURE OBSERVATION AT STORM CENTER (FROM TCVITALS) PRC-> POB= **, PQM= 0
03 B BOGUS SURFACE PRESSURE OBSERVATION AT STORM CENTER CREATED BY THIS PROGRAM  (DERIVED FROM ADJUSTING FIRST GUESS SURFACE PRESSURE ACCORDING TO SAFFIR-SIMPSON STORM CATEGORY) PRC-> POB= **, PQM= 0
10 B  REPORT IN THE VICINITY OF A TROPICAL STORM. PRESSURE ON ALL LEVELS FLAGGED SO REPORT WILL NOT BE ASSIMILATED.
PRC-> PQM= 10
99 B
 DROPWINSONDE REPORT IN THE VICINITY OF A TROPICAL STORM (WITHIN A RADIUS OF THE LARGER OF 111 KM OR THREE TIMES THE RADIUS OF MAXIMUM SURFACE WIND).  WIND ON ALL LEVELS FLAGGED SO WIND WILL NOT BE ASSIMILATED.
 WRC-> WQM=10