Table 11.   Reason codes associated with step "CQCHT", program code 005 (last revised 5/30/2001). 
  

KEY: 
  IN "R.CODE" COLUMN: 
              B - OCCURS IN ALL OPERATIONAL VERSIONS OF CQCHT. 
              N - CURRENTLY DOES NOT OCCUR IN ANY OPERATIONAL VERSION OF CQCHT. 

  IN "MNEMONIC" COLUMN: 
                @ - SET TO ORIGINAL QUALITY MARKER UNLESS ORIGINAL QUALITY MARKER WAS 2 IN WHICH CASE SET TO 1. 
                # - NEW VALUE CALCULATED. 
                & - NEW VALUE CALCULATED ONLY IF ITS QUALITY MARKER IS RESET TO 1. 

  
R.CODE       MEANING                                             MNEMONICS AFFECTED AND NEW VALUE FOR OBS, Q.M. 
=======      ==================================================  ==============================================

00 B         TEMPERATURE NOT CORRECTED, OKAY.                    TRC-> TQM=1


                                    Communication and Computation Errors
---------------------------------------------------------------------------------------------------------------- 
                                 Errors at a Single Interior Mandatory Level

R.CODE        MEANING                                             MNEMONICS AFFECTED AND NEW VALUE FOR OBS, Q.M.
=======       ==================================================  ==============================================

01 B          SINGLE HEIGHT.                                      ZRC-> ZOB=&, ZQM=1/3/13
 
02 B          SINGLE TEMPERATURE.                                 TRC-> TOB=&, TQM=1/3/13  
 
03 B          HEIGHT AND TEMPERATURE AT THE SAME LEVELOR HEIGHT   TRC-> TOB=&, TQM=1/3/13 
              AND TEMPERATURE AT THE SAMELEVEL WITH RESIDUAL      ZRC-> ZOB=&, ZQM=1/3/1
              COMPENSATION.

                                 Errors at Adjacent Mandatory Levels

R.CODE        MEANING                                             MNEMONICS AFFECTED AND NEW VALUE FOR OBS, Q.M.
=======       ==================================================  ==============================================

05 B          HEIGHT, TEMPERATURE OR BOTH.                        ZRC-> ZOB=&, ZQM=1/13
                                                                  TRC-> TOB=&, TQM=1/13

                                 Computation Error in Height at Mandatory Levels

R.CODE        MEANING                                             MNEMONICS AFFECTED AND NEW VALUE FOR OBS, Q.M. 
=======       ==================================================  ==============================================

06 B          HEIGHT COMPUTATION ERROR BETWEEN ANY TWO MANDATORY  ZRC-> ZOB=&, ZQM=1/3/13 
              LEVELS.


                                 Errors at Adjacent Mandatory Levels

R.CODE        MEANING                                             MNEMONICS AFFECTED AND NEW VALUE FOR OBS, Q.M. 
=======       ==================================================  ==============================================

07 B          HEIGHT AT TWO ADJACENT LEVELS.                      ZRC-> ZOB=&, ZQM=1/3/13 

08 B          TEMPERATURE AT TWO ADJACENT LEVELS.                 TRC-> TOB=&, TQM=1/3/13

09 B          HEIGHT AT THE LOWER, AND TEMPERATURE AT THE UPPER   ZRC-> ZOB=&, ZQM=1/3/13 
              OF TWO ADJACENT LEVELS.                             TRC-> TOB=&, TQM=1/3/13

10 B          TEMPERATURE AT THE LOWER, AND HEIGHT AT THE UPPER   ZRC-> ZOB=&, ZQM=1/3/13 
              OF TWO ADJACENT LEVELS.                             TRC-> TOB=&, TQM=1/3/13

             
                                  No Error

R.CODE        MEANING                                             MNEMONICS AFFECTED AND NEW VALUE FOR OBS, Q.M. 
=======       ==================================================  ==============================================

15 N          AUXILIARY LEVEL IN REGIONAL-OI VERSION              ZRC-> ZOB=#, ZQM=@
              RECALCULATED BY CQCHT (OBSOLETE).


                                  Errors at Significant Levels

R.CODE        MEANING                                             MNEMONICS AFFECTED AND NEW VALUE FOR OBS, Q.M. 
=======       ==================================================  ==============================================

20 B          SIGNIFICANT LEVEL TEMPERATURE CORRECTED.            TRC-> TOB=#, TQM=1
 
21,23 B       NON-CORRECTABLE SIGNIFICANT LEVEL TEMPERATURE       TRC-> TQM=13 
              ERRORS. 

24,25 B       NON-CORRECTABLE SIGNIFICANT LEVEL TEMPERATURE       TRC-> TQM=3 
              ERRORS.

22 B          ???????????????????????????????????                 TRC-> TQM=1


                                   Surface Errors

R.CODE        MEANING                                             MNEMONICS AFFECTED AND NEW VALUE FOR OBS, Q.M. 
=======       ==================================================  ==============================================

100 B         SURFACE PRESSURE COMMUNICATION ERROR CORRECTED.     PRC-> POB=#, PQM=1
 
102 B         SURFACE TEMPERATURE ERROR CORRECTED.                TRC-> TOB=#, TQM=1

105 B         LIKELY SURFACE TEMPERATURE ERROR, TOO SMALL TO      TRC-> TQM=1/3/13 
              CORRECT; OR UNDETERMINED ERROR(S), POSSIBLY IN      PRC-> PQM=1/3/13 
              SURFACE PRESSURE.

106 N         SURFACE PRESSURE OBSERVATION ERROR.                 PRC-> PQM=13


                                    Observation Errors
----------------------------------------------------------------------------------------------------------------

R.CODE        MEANING                                             MNEMONICS AFFECTED AND NEW VALUE FOR OBS, Q.M. 
=======       ==================================================  ==============================================

30,35 B       TEMPERATURE OBSERVATION ERRORS; REJECT OR USE WITH  TRC-> TQM=3/13 
              REDUCED WEIGHT.

36,37 B       HEIGHT OBSERVATION ERRORS; REJECT OR USE WITH       ZRC-> ZQM=3/1 
              REDUCED WEIGHT.