POLEUT

                                                                                
----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
POLEUT23                860104.          22.72530       0.1890        0.1639    
----+----0----+----0----+----0----+----0----+----0----+----0----+----0----+----0
                                                                                
COLUMNS FORMAT         DESCRIPTION                         DEFAULT VALUE & UNITS
                                                                                
                                                                                
1-6     A6     POLEUT - Used to modify and/or request                           
               adjustment of true pole coordinates                              
               and A.1-UT1 time differences.                                    
                                                                                
7       I1     = 0  No parameter adjustment.                         0          
               > 0  Parameter adjustment requested.                             
               < 2  Third card not present in this group.                       
               = 2  Pole adjustment constrained along the great                 
                    circle passing through the pole and defined                 
                    by the longitude specified in columns                       
                    25-44 of the third card in this group                       
               = 3  Adjusted parameter a priori correlations                    
                    provided on the third card in this group.                   
                                                                                
8       I1     = 0  Pole and A.1-UT1 values are obtained from        0          
                    POLEUT card.                                                
               = 1  Pole values are obtained from tables;                       
                    A.1-UT1 obtained from POLEUT card.                          
               = 2  Pole values obtained from POLEUT card;                      
                    A.1-UT1 obtained from tables.                               
               = 3  Pole and A.1-UT1 values obtained from                       
                    tables.                                                     
                                                                                
25-44   D20.8  Date in form YYMMDD.FFF of pole and A.1-UT1     No default.      
               values[1] to which this card applies. This                       
               date is for the midpoint of the interval                         
               specified in columns 25-44 of card two.                          
                                                                                
45-59   D15.3  A.1-UT1 value[1].                             See col. 8.  (S)   
                                                                                
60-72   D13.1  X of pole[1].                                 See col. 8.  (SA)  
                                                                                
73-80   D8.2   Y of pole[1].                                 See col. 8.  (SA)
JUNE 1991

9106.0

GLOBAL SET

POLEUT (cont)

                                                                                
                                                                                
SECOND CARD                                                                     
___________                                                                     
                                                                                
                                                                                
----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
                             5.0            0.01           0.1          0.1     
----+----0----+----0----+----0----+----0----+----0----+----0----+----0----+----0
                                                                                
                                                                                
COLUMNS FORMAT         DESCRIPTION                         DEFAULT VALUE & UNITS
                                                                                
                                                                                
1-23    23X    Blanks must be present.                                          
                                                                                
24      I1     =1 the units for the below averaging interval is hours  0        
               =0 the units for the below averaging interval is days            
                                                                                
25-44   D20.8  Averaging period[1] in the above units for      No default.      
               pole and A.1-UT1 values. The date in columns                     
               25-44 of the first card is for the midpoint                      
               of this interval                                                 
                                                                                
45-59   D15.3  A priori standard deviation in A.1-UT1.         0.0    (S)       
                                                                                
60-72   D13.1  A priori standard deviation in X of pole.       0.0    (SA)      
                                                                                
73-80   D8.2   A priori standard deviation in Y of pole.       0.0    (SA)
JUNE 1991

9106.0

GLOBAL SET

POLEUT (cont)

                                                                                
                                                                                
THIRD CARD                                                                      
__________                                                                      
                                                                                
                                                                                
----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
                           280.0            0.0            0.0          0.0     
----+----0----+----0----+----0----+----0----+----0----+----0----+----0----+----0
                                                                                
                                                                                
1-24    24X    Blanks must be present.                                          
                                                                                
25-44   D20.8  Longitude of great circle constraint for     See col. 7. (DEG)   
               X and Y of pole.                                                 
                                                                                
45-59   D15.3  A priori cross correlation between A.1-UT1      0.0  Unitless    
               and X of pole.                                                   
                                                                                
60-72   D13.1  A priori cross correlation between A.1-UT1      0.0  Unitless    
               and Y of pole.                                                   
                                                                                
73-80   D8.2   A priori cross correlation between X of pole    0.0  Unitless    
               and Y of pole.                                                   
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
                                                                                
UNITS:  DEG-DEGREES; S-SECONDS; SA-SECONDS OF ARC                               
                                                                                
                                                                                
                                                                                
IF CARD OMITTED:  DEFAULT VALUES GIVEN ABOVE ARE USED.                          
                                                                                
                                                                                
NOTE: [1] Values provided in columns 45-80 of first card are differenced        
          with interpolated table values for specified date (cols. 25-44)       
          and differences are applied as a discrete offset over entire          
          averaging interval (second card cols. 25-44).
JUNE 1991

9106.0

GLOBAL SET



Patrick Dahiroc
1998-09-10