Subject: [IGSREPORT-9384] Wk 1170 IGS SINEX Combination
From: David Hutchison <[email-masked]>
To: [email-masked]
Date: Thu, 27 Jun 2002 23:56:45 -0400 (EDT)

******************************************************************************
IGS Electronic Report   27 Jun 20:56:48 PDT 2002      Message Number 9384
******************************************************************************

Author:  R. Ferland , D. Hutchison
===================================================================
 Combined AC  solution for GPS week 1170 -  02/06/09 to 02/06/15
===================================================================
1) Contacts:
============
e-mail: [email-masked]
Tel:    (613)995-4002 (Remi Ferland)
Fax:    (613)995-3215
2) Products:
============
All products are available at cddisa.gsfc.nasa.gov
igs02P1170.snx  Combined weekly solution. 
igs02P1170.erp  Daily Earth Rotation Parameters.
igs00p02.erp    Daily Earth Rotation Parameters since GPS week 1013.
IGS02P24.snx    Cumulative Combined solution. 
igs02P1170.sum  This file.
igs02P1170.itr  Residuals between the AC and the IGS00 for the RF stations. 
igs02P1170.res  Residuals between the AC and the Combined Weekly solution.
IGS02P24.res    Residuals between the AC and the Cumulative Combined solution.
 
Where IGSyyPww & igsyyPwwww represent:
      yy      Last 2 digits of the year
      ww      week in year yy
      wwww    GPS week
      P       GPS technique used
 
3) Combination Strategy:
========================
       The AC solutions are processed using the following procedure:
3-1) The AC solutions are checked/corrected for possible format problems,
     station names inconsistencies, etc...
3-2) The AC solutions are unconstrained according to the information provided
     in the SOLUTION/APRIORI Block.
3-3) The AC solutions are aligned (using a 7-parameters) and compared to the
     IGS00 stations at the current epoch.
     ftp://igscb.jpl.nasa.gov/igscb/station/coord/IGS01P37_RS54.SNX.Z
3-4) The AC are compared to IGS00, to each other, to the previous week
     solution and to the cumulative solution in order to identify and remove
     outliers.
3-5) The weekly AC solutions are combined and added to the cumulative
     combined solution. The cumulative combination is done to ensures 14
     parameters singularity.
     The weekly combined solution is aligned to the IGS00 of the current
     epoch using a 7-parameters transformation. The singular cumulative
     combined solution is aligned to the IGS00 of the reference epoch
     using a 14-parameters transformation and the 54 ITRF station positions
     and velocities. The IGS00 is a realization of ITRF2000.
     For more details, see:
     Blewitt, G., C. Boucher and J. Kouba, 1997, Procedure for ITRF continuous
       realization, the report of the IGS GB, presented to the IGS Governing 
       Board Meeting held in San Francisco, Dec. 11.
     Kouba, J., J. Ray and M.M. Watkins, IGS Reference Frame Realization, 1998
       IGS Analysis Center Workshop Proceedings, European Space Operations
       Centre, Darmstadt, Germany.
The combination software was developed at NRCan.
4) Remarks:
===========
     ITR = IGS01P37_RS54.SNX
     igs = igs02P1170.snx
     IGS = IGS02P24.snx
     BuA = IERS Bulletin A
     mit ncl are used to quality control the weekly combination.
     gfz excluded from the geocenter estimation (Sec. 5-4).
     Solutions with manual station deletion:
         After unconstraining:
             jpl  KELY
             emr  NRC1  NRC2
     New stations in the cumulative solution IGS02P24.snx
                  QAQ1 A ---- 
     4-1) Starting with GPS week 1143, the solutions are aligned to the
     IGS01P37_RS54.SNX realization of ITRF2000.
     4-2) Starting with GPS week 1078, UT1-UTC from IERS Bulletin A
     is included in the erp files.
5) Results:
===========
5-1)      AC (Variance Factor)^0.5 estimates:
==================================================
           The residuals used in the estimation of the Variance Factor
           are the differences between the cumulative combined solution
           and each AC weekly solution.
           SF = (Variance Factor)^0.5 = (Chi^2/dof)^0.5
           Final(SF) = Apriori(SF) * Aposteriori(SF)
Solution       |# sta| #RF |    Apriori(SF)|Aposteriori(SF)|      Final(SF)|
---------------|-----|-----|---------------|---------------|---------------|
cod            | 128 |  45 |        25.922 |         1.000 |        25.929 |
emr            |  38 |  27 |         3.838 |         0.999 |         3.835 |
esa            |  56 |  37 |        13.120 |         1.001 |        13.129 |
gfz            |  90 |  37 |        10.589 |         1.001 |        10.599 |
jpl            |  95 |  32 |         4.288 |         0.996 |         4.271 |
ngs            |  73 |  48 |        21.567 |         1.000 |        21.573 |
sio            | 135 |  44 |         2.250 |         1.000 |         2.251 |
mit            | 178 |  48 |         3.547 |         0.858 |         3.044 |
ncl            | 109 |  46 |         2.449 |         0.989 |         2.421 |
igs            | 170 |  50 |         1.262 |         1.014 |         1.280 |
---------------|-----|-----|---------------|---------------|---------------|
5-2)      Solution Residuals weighted Average & STD :
=====================================================
5-2-1)    With respect to the IGS00 stations:
=============================================
Solution       |  Weighted Average (mm)    |          STD (mm)         |
               |      N        E        U  |      N        E        U  |
---------------|---------------------------|---------------------------|
cod         44 |     1.3      0.4      0.9 |     3.2      3.4     11.7 |
emr         26 |    -0.2     -0.1      0.1 |     2.4      2.6      6.5 |
esa         36 |    -0.2     -0.7      0.4 |     8.0      5.6     10.4 |
gfz         36 |    -0.1      0.2     -1.1 |     2.7      3.6      8.4 |
jpl         31 |     0.1      0.2      1.5 |     2.4      2.9      9.9 |
ngs         47 |     0.3     -0.5     -0.9 |     5.3      7.7     10.2 |
sio         43 |    -0.3      0.4     -1.3 |     3.6      3.5     11.9 |
mit         47 |     0.8      0.3      0.1 |     3.4      3.2      7.6 |
ncl         45 |     0.9      0.2     -0.1 |     2.1      2.6      5.6 |
---------------|---------------------------|---------------------------|
5-2-2)    With respect to the Weekly Combination:
=================================================
Solution       |  Weighted Average (mm)    |          STD (mm)         |
               |      N        E        U  |      N        E        U  |
---------------|---------------------------|---------------------------|
cod        127 |     0.7      0.1     -0.3 |     1.3      1.2      8.4 |
emr         38 |    -0.4     -0.6     -1.3 |     1.7      1.8      5.1 |
esa         54 |    -0.5     -1.2     -0.2 |     7.3      5.9      9.4 |
gfz         89 |    -0.2     -0.1     -0.3 |     2.1      2.1      5.4 |
jpl         95 |     0.2      0.5      2.0 |     2.3      2.0      7.3 |
ngs         71 |     0.5     -0.5     -0.1 |     5.2      7.3      9.2 |
sio        130 |    -0.5     -0.1      0.2 |     2.3      3.2     11.9 |
mit        165 |     0.3      0.0     -0.9 |     1.0      0.8      4.6 |
ncl        107 |     0.6     -0.2     -0.1 |     1.0      0.6      3.1 |
ITR         49 |    -0.7     -0.6      0.2 |     3.2      2.5      7.1 |
---------------|---------------------------|---------------------------|
5-2-3)    With respect to the Cumulative Combination:
=====================================================
Solution       |  Weighted Average (mm)    |          STD (mm)         |
               |      N        E        U  |      N        E        U  |
---------------|---------------------------|---------------------------|
cod        121 |     0.7      0.5     -0.6 |     2.4      2.5     10.8 |
emr         38 |    -0.4     -0.8     -1.3 |     2.1      2.6      7.6 |
esa         55 |     0.0     -1.1     -0.6 |     7.6      6.8     10.3 |
gfz         78 |    -0.4     -0.1     -0.7 |     2.8      3.3      8.3 |
jpl         85 |     0.1      0.6      2.1 |     2.9      2.8     10.4 |
ngs         71 |     0.1     -0.2     -0.3 |     5.4      7.5     10.8 |
sio        126 |    -0.4      0.4      0.5 |     2.9      4.1     12.4 |
mit        146 |     0.3      0.3     -0.8 |     2.5      2.7      8.8 |
ncl        105 |     0.5     -0.1      0.1 |     1.9      2.3      7.2 |
igs        149 |     0.0      0.4      0.0 |     2.0      2.3      5.9 |
ITR         54 |    -0.2     -0.2      0.0 |     0.8      1.0      1.9 |
---------------|---------------------------|---------------------------|
5-3)      7-Parameters Transformation: AC ----> IGS01P37_RS54.snx
=================================================================
5-3-1)    Estimates : 
=====================
Solution       |    R X      R Y      R Z      T X      T Y      T Z      SCL  |
               |   (mas)    (mas)    (mas)     (mm)     (mm)     (mm)    (ppb) |
---------------|---------------------------------------------------------------|
cod            |   0.006    0.015   -0.047     13.4     10.0      5.3     1.82 |
emr            |   0.003    0.000   -0.025      4.7      8.1     -3.8     1.00 |
esa            |   0.130    0.004    0.025      6.3     13.3     -2.1     0.66 |
gfz            |  -0.056   -0.218    0.056      1.7      0.5     -2.6     0.82 |
jpl            |   0.008   -0.003   -0.033      2.0      2.3    -12.7     0.42 |
ngs            |  -0.021   -0.071    0.014      6.4     -7.7    -50.1     0.90 |
sio            |  -0.034    0.095   -0.058      3.7      3.3     30.2     0.49 |
mit            |   0.008    0.015   -0.012     -0.4     -0.4     -0.6     1.19 |
ncl            |  -0.022   -0.030   -0.042      0.9     -0.7     -2.7     1.07 |
---------------|---------------------------------------------------------------|
5-3-2)    STD : 
===============
Solution       |    R X      R Y      R Z      T X      T Y      T Z      SCL  |
               |   (mas)    (mas)    (mas)     (mm)     (mm)     (mm)    (ppb) |
---------------|---------------------------------------------------------------|
cod            |   0.059    0.060    0.067      1.5      1.5      1.5     0.24 |
emr            |   0.078    0.076    0.087      2.0      2.0      2.0     0.31 |
esa            |   0.068    0.069    0.076      1.8      1.8      1.8     0.28 |
gfz            |   0.066    0.066    0.074      1.7      1.7      1.7     0.27 |
jpl            |   0.070    0.069    0.078      1.8      1.8      1.8     0.28 |
ngs            |   0.058    0.057    0.065      1.5      1.5      1.5     0.23 |
sio            |   0.062    0.059    0.066      1.6      1.5      1.5     0.24 |
mit            |   0.057    0.057    0.065      1.5      1.5      1.5     0.23 |
ncl            |   0.059    0.058    0.066      1.5      1.5      1.5     0.24 |
---------------|---------------------------------------------------------------|
5-4)      Geocenter:
====================
               |      X        Y        Z  |    s X      s Y      s Z  |
               |    (mm)     (mm)     (mm) |    (mm)     (mm)     (mm) |
---------------|---------------------------|---------------------------|
igs            |     6.3      2.8     -3.1 |     1.5      1.6      4.7 |
---------------|---------------------------|---------------------------|
5-5)      ERP Residuals Weighted Average & STD :
================================================
5-5-1)    Weighted Average :
============================
Solution       |      UT       LOD       XPO      XPOR       YPO      YPOR  |
               |      us        us    .01mas    .01ma/d   .01mas    .01ma/d |
---------------|------------------------------------------------------------|
cod            |     ---        2.4      -1.1       ---      -3.0       --- |
emr            |     ---       -8.4       -.1       3.6       -.3      13.1 |
esa            |     ---      -44.9      -5.7       ---     -25.3       --- |
gfz            |     ---       16.3       4.7       3.9      14.0      -1.3 |
jpl            |     ---       -8.3       1.8       -.2      -4.7       5.2 |
ngs            |     ---       64.2      19.5       2.5      27.4     -13.9 |
sio            |     ---       15.4      -2.2      -1.3       8.8      -9.6 |
mit            |     ---     -915.0       1.5       1.4      -1.1      -1.7 |
ncl            |     ---       -2.6       1.4       ---        .0       --- |
ITR            |     ---        ---       ---       ---       ---       --- |
BuA            |     ---       -6.9      -7.0       1.8      21.0       -.4 |
---------------|------------------------------------------------------------|
5-5-2)    STD :
===============
Solution       |      UT       LOD       XPO      XPOR       YPO      YPOR  |
               |      us        us    .01mas    .01ma/d   .01mas    .01ma/d |
---------------|------------------------------------------------------------|
cod            |     ---        7.3       1.2       ---       2.4       --- |
emr            |     ---        4.8       2.4      14.9       3.6       7.4 |
esa            |     ---       20.1       3.3       ---       5.9       --- |
gfz            |     ---       13.8       3.7       6.1       4.2       7.1 |
jpl            |     ---        6.4       1.4       8.6       1.9       6.7 |
ngs            |     ---       26.5       8.9      64.5      13.8      25.6 |
sio            |     ---        6.8       2.1       7.7       5.6       8.8 |
mit            |     ---      197.8       1.9       4.1       4.0       8.3 |
ncl            |     ---        2.1       1.1       ---        .8       --- |
ITR            |     ---        ---       ---       ---       ---       --- |
BuA            |     ---       21.1       3.3       9.5       8.8      10.5 |
---------------|------------------------------------------------------------|
5-6)      Outliers:
===================
Thresholds set at 5 sigmas and 50 mm.
 Solution             Solution           |  Station   |    N       E       U  |
              Minus                      |code id soln|   (mm)    (mm)    (mm)|
-----------------------------------------|------------|-----------------------|
                                         |            |                       |
IGS01P37_RS54.snx    esa11707.snx        |CHAT  A ----|    2.1    -5.2   -85.7|
                                         |            |                       |
IGS01P37_RS54.snx    gfz11707.snx        |GUAM  A ----|   17.5    -6.9    19.3|
                                         |            |                       |
IGS01P37_RS54.snx    jpl11707.snx        |GUAM  A ----|   15.7    -8.6    16.9|
                                         |            |                       |
IGS01P37_RS54.snx    ngs11707.snx        |GUAM  A ----|   24.1    -4.8    26.4|
                                         |            |                       |
IGS01P37_RS54.snx    sio11707.snx        |SANT  A ----|   -0.4     8.8    52.8|
                                         |            |                       |
IGS01P37_RS54.snx    ncl1170g.snx        |GUAM  A ----|   17.0    -7.7    10.0|
                                         |            |                       |
emr11707.snx         jpl11707.snx        |LAE1  A ----|    1.2     2.7    50.0|
                                         |            |                       |
IGS02P23.snx         jpl11707.snx        |TUBI  A ----|  -51.4    13.4   176.6|
                                         |            |                       |
IGS02P23.snx         jpl11707.snx        |BOGT  A ----|   -1.5   -13.0    -6.3|
IGS02P23.snx         jpl11707.snx        |HOLB  A ----|    3.7     4.4    52.5|
                                         |            |                       |
IGS02P23.snx         mit1170g.snx        |TUBI  A ----|  -48.7    12.6   171.2|
                                         |            |                       |
IGS02P23.snx         igs02P1170.snx      |BOGT  A ----|   -1.2   -15.1    -9.2|
-----------------------------------------|------------|-----------------------|
5-7)              Conflicts:
=========================== 
5-7-1) Station Name Conflicts:
============================= 
IERS DOMES NO    cod    emr    esa    gfz    jpl    ngs    sio    IGS    igs
============= ====== ====== ====== ====== ====== ====== ====== ====== ======
    50103M108 TIDB A        TID2 A TIDB A TIDB A TID2 A TID2 A TIDB A TIDB A
                            TIDB A                                          
    30314M002 SUTH A        SUTH B SUTH A SUTH A SUTH A SUTH A SUTH A SUTH A
    42005M001 GALA A GALA A GALA B GALA A GALA A GALA B GALA A GALA A GALA A
    22306M002 IISC A IISC A IISC B IISC A IISC A IISC B IISC A IISC A IISC A
    13407S012 MADR A               MADR A MAD2 A        MAD2 A MADR A MADR A
    40114M001 NRC1 A NRC1 A NRC1 A        NRC1 A        NRC1 A NRC1 A NRC1 A
                     NRC2 A                                                 
    40405S031 GOLD A               GOLD A        GOL2 A GOL2 A GOLD A GOLD A
    50107M004 YAR2 A                                           YAR1 A YAR1 A
 
MISSING IERS DOMES NOS AT sio:
-----------------------------
  CAVA A  SFEL A  VOLT A
IERS DOMES NO    mit    ncl    IGS    igs
============= ====== ====== ====== ======
    13407S012 MADR A        MADR A MADR A
              MAD2 A                     
    31303M001 MAS1 A                     
    31303M002        MAS1 A MAS1 A MAS1 A
    40114M001 NRC1 A NRC1 A NRC1 A NRC1 A
              NRC2 A                     
    40405S031 GOLD A        GOLD A GOLD A
              GOL2 A                     
    50103M108 TIDB A TID2 A TIDB A TIDB A
              TID2 A TIDB A              
    50107M004 YAR2 A        YAR1 A YAR1 A
 
MISSING IERS DOMES NOS AT mit:
-----------------------------
  CAVA A  SFEL A  VOLT A
5-7-2) Station Antenna Conflicts:
================================ 
 _______________________ 
|Enforcing these aliases|
|_______________________|
   YAR1 A: YAR2 A  
   SUTH A: SUTH B  
   IISC A: IISC B  
   TIDB A: TID2 A  
   GALA A: GALA B  
   MADR A: MAD2 A  
   GOLD A: GOL2 A  
ABBREVIATIONS:
-------------
    L1: L1 Offset
    L2: L2 Offset
   ECC: Eccentricity
    -N: NORTH (Latitude) 
    -E: EAST  (Longitude)
    -U: UP    (Vertical) 
Compare to file IGS.SNX (IGS).                
Antenna Conflicts in file esa11707.snx (esa).           
------- --------- -- ---- 
    STN       L1-U   L1-N   L1-E   L2-U   L2-N   L2-E  ECC-U  ECC-N  ECC-E
AGY CODE PT   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)
=== ==== ==   ====   ====   ====   ====   ====   ====   ====   ====   ====
esa NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0000  .0000
IGS NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0040 -.0010
File: jpl11707.snx (jpl).                                                   
---- (SITE/GPS_PHASE_CENTER records)
 Setting this antenna to zero.
  ASH700936C_M    ASHT 11976 ------ ------ ------ ------ ------ ------
            
 May affect some sites listed below.
 Setting this antenna to zero.
  ASH700936C_M    ASHT 12129 ------ ------ ------ ------ ------ ------
            
 May affect some sites listed below.
Antenna Conflicts in file jpl11707.snx (jpl).           
------- --------- -- ---- 
    STN       L1-U   L1-N   L1-E   L2-U   L2-N   L2-E  ECC-U  ECC-N  ECC-E
AGY CODE PT   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)
=== ==== ==   ====   ====   ====   ====   ====   ====   ====   ====   ====
jpl NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0000  .0000
IGS NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0040 -.0010
jpl RIOG  A  .0000  .0000  .0000  .0000  .0000  .0000  .0350  .0000  .0000
IGS RIOG  A  .1100  .0000  .0000  .1280  .0000  .0000  .0350  .0000  .0000
jpl SCUB  A  .0000  .0000  .0000  .0000  .0000  .0000  .0460  .0000  .0000
IGS SCUB  A  .1100  .0000  .0000  .1280  .0000  .0000  .0460  .0000  .0000
File: mit1170g.snx (mit).                                                   
---- (SITE/GPS_PHASE_CENTER records)
 Setting this antenna to zero.
  ASH700936C_M    ASH  12129 ****** ****** ****** ****** ****** ****** IGS_01    
 May affect some sites listed below.
 Setting this antenna to zero.
  ASH700936C_M    ASH  11976 ****** ****** ****** ****** ****** ****** IGS_01    
 May affect some sites listed below.
Antenna Conflicts in file mit1170g.snx (mit).           
------- --------- -- ---- 
    STN       L1-U   L1-N   L1-E   L2-U   L2-N   L2-E  ECC-U  ECC-N  ECC-E
AGY CODE PT   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)
=== ==== ==   ====   ====   ====   ====   ====   ====   ====   ====   ====
mit NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0000  .0000
IGS NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0040 -.0010
mit RIOG  A  .0000  .0000  .0000  .0000  .0000  .0000  .0350  .0000  .0000
IGS RIOG  A  .1100  .0000  .0000  .1280  .0000  .0000  .0350  .0000  .0000
mit SCUB  A  .0000  .0000  .0000  .0000  .0000  .0000  .0460  .0000  .0000
IGS SCUB  A  .1100  .0000  .0000  .1280  .0000  .0000  .0460  .0000  .0000
File: ncl1170g.snx (ncl).                                                   
---- (SITE/GPS_PHASE_CENTER records)
 Setting this antenna to zero.
  ASH700936C_M    ASHT 12126 ------ ------ ------ ------ ------ ------
            
 May affect some sites listed below.
 Setting this antenna to zero.
  ASH700936C_M    ASHT 12129 ------ ------ ------ ------ ------ ------
            
 May affect some sites listed below.
Antenna Conflicts in file ncl1170g.snx (ncl).           
------- --------- -- ---- 
    STN       L1-U   L1-N   L1-E   L2-U   L2-N   L2-E  ECC-U  ECC-N  ECC-E
AGY CODE PT   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)
=== ==== ==   ====   ====   ====   ====   ====   ====   ====   ====   ====
ncl NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0000  .0000
IGS NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0040 -.0010
ncl RIOG  A  .0000  .0000  .0000  .0000  .0000  .0000  .0350  .0000  .0000
IGS RIOG  A  .1100  .0000  .0000  .1280  .0000  .0000  .0350  .0000  .0000
Antenna Conflicts in file ngs11707.snx (ngs).           
------- --------- -- ---- 
    STN       L1-U   L1-N   L1-E   L2-U   L2-N   L2-E  ECC-U  ECC-N  ECC-E
AGY CODE PT   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)
=== ==== ==   ====   ====   ====   ====   ====   ====   ====   ====   ====
ngs MCM4  A  .1100  .0000  .0000  .1280  .0000  .0000  .1830  .0000  .0000
IGS MCM4  A  .1100  .0000  .0000  .1280  .0000  .0000  .0814  .0000  .0000
ngs NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0000  .0000
IGS NYAL  A  .0780  .0000  .0000  .0960  .0000  .0000 5.2160  .0040 -.0010
ngs WUHN  A  .1081  .0000  .0000  .1256  .0000  .0000 2.3200  .0000  .0000
IGS WUHN  A  .1100  .0000  .0000  .1280  .0000  .0000 2.3200  .0000  .0000
Antenna Conflicts in file sio11707.snx (sio).           
------- --------- -- ---- 
    STN       L1-U   L1-N   L1-E   L2-U   L2-N   L2-E  ECC-U  ECC-N  ECC-E
AGY CODE PT   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)   (M.)
=== ==== ==   ====   ====   ====   ====   ====   ====   ====   ====   ====
sio CHAT  A  .1100  .0000  .0000  .1280  .0000  .0000  .0031  .0000  .0000
IGS CHAT  A  .1100  .0000  .0000  .1280  .0000  .0000  .0062  .0000  .0000
sio NOUM  A  .1100  .0000  .0000  .1280  .0000  .0000  .0000  .0000  .0000
IGS NOUM  A  .0714  .0003  .0005  .0682 -.0004  .0001  .0000  .0000  .0000
The following files have no antenna conflicts: 
   - cod11707.snx (cod)            
   - emr11707.snx (emr)            
   - gfz11707.snx (gfz)            
-- 
David Hutchison
Geodetic Survey of Canada
Ottawa, Ontario, Canada
Internet: [email-masked]