PREPRO

                                                                                
----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
PREPRO                                                                          
----+----0----+----0----+----0----+----0----+----0----+----0----+----0----+----0
                                                                                
                                                                                
COLUMNS FORMAT         DESCRIPTION                         DEFAULT VALUE & UNITS
                                                                                
1-6     A6        PREPRO - Requests data preprocessing.                         
                  Provides a means of overriding                                
                  observation data preprocessing                                
                  indicators which may be in error.                             
                                                                                
7-14    I8        Station number.                                               
                                                                                
15      I1        Station/satellite configuration.                              
                                                                                
16-17   I2        Measurement Type. 2 digits or less.            0              
                  See list of measurement types after                           
                  ENDARC description.                                           
                                                                                
18-24   I7        Satellite ID.                                                 
                                                                                
25      I1        Indicates header record PREPRO word to                        
                  which the information on the this card                        
                  applies.                                                      
                                                                                
                    0 - PREPRO words on all header                              
                        records                                                 
                    9 - PREPRO words on all Master header                       
                        records                                                 
                    n - PREPRO word on Header record                            
                        number "n" (n<4).

DEC 1992

9212.0

ARC SET - Option Cards

DATA SUBGROUP

PREPRO (cont)

                                                                                
                                                                                
COLUMNS FORMAT         DESCRIPTION                         DEFAULT VALUE & UNITS
                                                                                
26      I1         Defines default actions for columns                          
                   27-30, 41-50, and 61-70 if those                             
                   columns remain blank or zero.                                
                                                                                
                   Value       Action                                           
                                                                                
                     0       Compute and apply corrections                      
                             as indicated by the PREPRO word.                   
                                                                                
                     1       Only apply corrections already                     
                             provided by the data.                              
                                                                                
                     2       Ignore the data block PREPRO                       
                             words and apply corrections                        
                             appropriate for this type data.                    
                                                                                
                     3       Remove corrections provided                        
                             in the data.                                       
                                                                                
                     4       Remove corrections provided                        
                             in the data and compute and                        
                             apply corrections appropriate                      
                             for this type of data.                             
                                                                                
27-30   4I1        Switches for bits  1-4  of PREPRO word.                      
                                                                                
41-50   10I1       Switches for bits  5-14 of PREPRO word.                      
                                                                                
61-70   10I1       Switches for bits 15-24 of PREPRO word.                      
                                                                                
71-80   D10.8     Measurement Type. 3 digits or less.            0              
                  Will be converted to an integer.                              
                  See list of measurement types after                           
                  ENDARC description.

DEC 1992

9212.0

ARC SET - Option Cards

DATA SUBGROUP

PREPRO (cont)

                                                                                
                                                                                
NOTES: [1] Columns 27-30, 41-50, 61-70 have different meanings for different    
           types of data.  However, digits specified in these columns result    
           in actions being taken by the program in the same manner as          
           indicated for column 26.                                             
                                                                                
       [2] If PREPRO is intended to apply to all data a PREPRO                  
           card should preceed all SELECT cards otherwise PREPRO                
           applies only to its preceeding SELECT card in the setup.             
                                                                                
                                                                                
                                                                                
                                                                                
IF CARD OMITTED: The absence of a PREPRO card is an indicator that the          
                 observation data is to be used as it appears on the            
                 input data file.                                               
                 With a blank PREPRO card corrections will be applied           
                 as indicated by the PREPRO word on all header records.

DEC 1992

9212.0

ARC SET - Option Cards

DATA SUBGROUP


Patrick Dahiroc
1998-09-10