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[IGSREPORT-9844] Wk 1195 MIT T2 Analysis Report



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IGS Electronic Report   19 Dec 12:53:38 PST 2002      Message Number 9844
******************************************************************************

Author: Thomas Herring

********************************************************************************
MIT ANALYSIS REPORT GPS-WEEK 1195    Dates: 02dec01  to  02dec07 
********************************************************************************

MIT (Massachusetts Institute of Technology) 
Room 54-618
77 Massachusetts Avenue, 
Cambridge,  MA  02139
e-mail: tah @ mtglas.mit.edu 
tel:    (617)253-5941 (Tom Herring)
fax:    (617)253-1699

PRODUCTS GENERATED:
The following products are generated and uploaded into CDDIS @ NASA/GSFC
   MIT1195g.SNX   Combined sinex file from all available analysis centers
   MIT1195g.SUM   Name of this summary file
   MIT1195g.RES   File of the individual AC position estimates residuals 
                  to the combined solution for the week. 

0.0 Starting Week 1125, we removed AREQ from the sites used in determining
    the variance re-scaling of the center SINEX files.  This site
    appears to have moved by 0.5 meters at around week 1120.
0.1 Starting Week 1110, we stopped applied a pole-tide correction to
    SIO sinex files because this correction is already made in their
    analysis.
0.2 Starting Week 1066, we adopted the IGS realization of the ITRF97
    (referred to as IGS97).  We also replaced our constrained solution
    a loose solution with translation (+-1 mm) and orientation (+-0.1 mas)
    constraints applied.
0.3 Starting Week 1020, we adopted the ITRF97 reference frame
0.4 Starting Week 1002, we re-ordered the summary to give the residual
    summary and the SINEX file errors first.  


CENTER SUMMARY STATISTICS
 CENTER   #       North           East           Up
               RMS    Chi     RMS    Chi    RMS     Chi
              (mm)           (mm)          (mm)
 COD    150    1.1    1.0      .8     .8     5.8    1.6  
 JPL      0     .0     .0      .0     .0      .0     .0  
 SIO    141    1.6     .8     2.5    1.0     8.0    1.5  
 EMR     44    2.3     .4     3.0     .5    10.2     .5  
 ESA      0     .0     .0      .0     .0      .0     .0  
 GFZ    151    1.2     .8     1.1     .9     6.2    1.3  
 NGS     75    4.6    1.0     4.6     .7    12.4     .9  
 
CENTER SINEX ERRORS: (corrected during processing).
 CNT  Site Type of Error           Used values                       IGS.SNX values
 COM  WUHN Eccentricity: Used         -.0094  -.0022  2.3610 Real   .0000   .0000  2.3610  m
 NRC  NYAL Eccentricity: Used          .0040  -.0010  5.2160 Real   .0000   .0000  5.2160  m
 NOA  BAHR Used ASH700936B_M     dL1   .0000   .0000   .1089  dL2   .0000   .0000   .1274  m
 NOA  BAHR Real ASH700936B_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 NOA  BAKO Used TRM14532.00      dL1   .0000   .0000   .0757  dL2   .0000   .0000   .0745  m
 NOA  BAKO Real TRM14532.00      dL1   .0000  -.0030   .0780  dL2  -.0031  -.0013   .0744  m
 NOA  BRAZ Eccentricity: Used          .0000   .0000   .0070 Real   .0000   .0000   .0080  m
 NOA  CHAT Used ASH701945C_M     dL1   .0000   .0000   .1090  dL2   .0000   .0000   .1279  m
 NOA  CHAT Real ASH701945C_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 NOA  GOUG Used TRM29659.00      dL1   .0000   .0000   .1098  dL2   .0000   .0000   .1280  m
 NOA  GOUG Real TRM29659.00      dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 NOA  KELY Used ASH701945C_M     dL1   .0000   .0000   .1090  dL2   .0000   .0000   .1279  m
 NOA  KELY Real ASH701945C_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 NOA  KERG Used TRM29659.00      dL1   .0000   .0000   .1098  dL2   .0000   .0000   .1280  m
 NOA  KERG Real TRM29659.00      dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 NOA  KOKB Used ASH701945C_M     dL1   .0000   .0000   .1090  dL2   .0000   .0000   .1279  m
 NOA  KOKB Real ASH701945C_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 NOA  KOUR Used ASH701945C_M     dL1   .0000   .0000   .1090  dL2   .0000   .0000   .1279  m
 NOA  KOUR Real ASH701945C_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 NOA  MAG0 Used ASH700936D_M     dL1   .0000   .0000   .1089  dL2   .0000   .0000   .1274  m
 NOA  MAG0 Real ASH700936D_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 NOA  MATE Used TRM29659.00      dL1   .0000   .0000   .1098  dL2   .0000   .0000   .1280  m
 NOA  MATE Real TRM29659.00      dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 NOA  NOUM Used TRM41249.00      dL1   .0000   .0000   .0714  dL2   .0000   .0000   .0682  m
 NOA  NOUM Real TRM41249.00      dL1   .0003   .0005   .0714  dL2  -.0004   .0001   .0682  m
 NOA  RIOG Used ASH700936C_M     dL1   .0000   .0000   .1089  dL2   .0000   .0000   .1274  m
 NOA  RIOG Real ASH700936C_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 NOA  SUTH Used ASH701945C_M     dL1   .0000   .0000   .1090  dL2   .0000   .0000   .1279  m
 NOA  SUTH Real ASH701945C_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 NOA  THTI Used TRM29659.00      dL1   .0000   .0000   .1098  dL2   .0000   .0000   .1280  m
 NOA  THTI Real TRM29659.00      dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 NOA  TIXI Used ASH700936D_M     dL1   .0000   .0000   .1089  dL2   .0000   .0000   .1274  m
 NOA  TIXI Real ASH700936D_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 NOA  WUHN Used ASH700936E       dL1   .0000   .0000   .1081  dL2   .0000   .0000   .1256  m
 NOA  WUHN Real ASH700936E       dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 NOA  WUHN Eccentricity: Used         -.0094  -.0022  2.3610 Real   .0000   .0000  2.3610  m
 NOA  AUCK Used ASH701945C_M     dL1   .0000   .0000   .1090  dL2   .0000   .0000   .1279  m
 NOA  AUCK Real ASH701945C_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 NOA  GRAZ Used ASH701945C_M     dL1   .0000   .0000   .1090  dL2   .0000   .0000   .1279  m
 NOA  GRAZ Real ASH701945C_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 COD  MALD Used LEIAT504         dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 COD  MALD Real LEIAT504         dL1   .0003  -.0003   .1093  dL2   .0011   .0011   .1282  m
 COD  WUHN Eccentricity: Used          .0000   .0000  2.3200 Real   .0000   .0000  2.3610  m
 SIO  VESL Eccentricity: Used          .0000   .0000  -.0110 Real   .0000   .0000  -.0112  m
 SIO  QAQ1 Eccentricity: Used          .0000   .0000   .0000 Real   .0000   .0000   .1206  m
 SIO  KELY Used ASH701945C_M     dL1   .0005   .0003   .1090  dL2   .0003   .0012   .1279  m
 SIO  KELY Real ASH701945C_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 SIO  KOUR Used ASH701945C_M     dL1   .0005   .0003   .1090  dL2   .0003   .0012   .1279  m
 SIO  KOUR Real ASH701945C_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 SIO  THU3 Used ASH701073.1      dL1   .0014  -.0010   .1089  dL2   .0010   .0005   .1274  m
 SIO  THU3 Real ASH701073.1      dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 SIO  HOLM Used ASH701945C_M     dL1   .0005   .0003   .1090  dL2   .0003   .0012   .1279  m
 SIO  HOLM Real ASH701945C_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 SIO  INVK Used ASH701945C_M     dL1   .0005   .0003   .1090  dL2   .0003   .0012   .1279  m
 SIO  INVK Real ASH701945C_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 SIO  KOKB Used ASH701945C_M     dL1   .0005   .0003   .1090  dL2   .0003   .0012   .1279  m
 SIO  KOKB Real ASH701945C_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 SIO  CHAT Used ASH701945C_M     dL1   .0005   .0003   .1090  dL2   .0003   .0012   .1279  m
 SIO  CHAT Real ASH701945C_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 SIO  AUCK Used ASH701945C_M     dL1   .0005   .0003   .1090  dL2   .0003   .0012   .1279  m
 SIO  AUCK Real ASH701945C_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 SIO  PIMO Used ASH701945C_M     dL1   .0005   .0003   .1090  dL2   .0003   .0012   .1279  m
 SIO  PIMO Real ASH701945C_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 SIO  TCMS Used LEIAT504         dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 SIO  TCMS Real LEIAT504         dL1   .0003  -.0003   .1093  dL2   .0011   .0011   .1282  m
 SIO  KIRU Used ASH701945C_M     dL1   .0005   .0003   .1090  dL2   .0003   .0012   .1279  m
 SIO  KIRU Real ASH701945C_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 SIO  SUTH Used ASH701945C_M     dL1   .0005   .0003   .1090  dL2   .0003   .0012   .1279  m
 SIO  SUTH Real ASH701945C_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 SIO  TRO1 Used ASH701073.1      dL1   .0014  -.0010   .1089  dL2   .0010   .0005   .1274  m
 SIO  TRO1 Real ASH701073.1      dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 SIO  GRAZ Used ASH701945C_M     dL1   .0005   .0003   .1090  dL2   .0003   .0012   .1279  m
 SIO  GRAZ Real ASH701945C_M     dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m
 SIO  NYA1 Used ASH701073.1      dL1   .0014  -.0010   .1089  dL2   .0010   .0005   .1274  m
 SIO  NYA1 Real ASH701073.1      dL1   .0000   .0000   .1100  dL2   .0000   .0000   .1280  m

HISTORY and PROCEDURES
----------------------

0.0 Starting Week 998 we adopted full checking of the center sinex
    headers and we correct the solutions for differences between the
    headers and a modified version of IGS.SNX.  (The modifications are
    to put full precision antenna L1/L2 offsets and to correct the WUHN
    entry.  The station log for this site shows height to BCR not ARP).
    A new error reporting block has been added below.  We also have 
    removed some of the routine documention in this summary.

0.1 Starting week 993 we started to add corrections for the pole-tide to
    the SIO, NGS, and ESA sinex.  According to the analysis descriptions
    none of these centers apply the pole tide correction.  Starting with
    the re-submission of week 992, we corrected the LOD values in JPL sinex
    files from regularized LOD (should be called LODR in the SINEX file)
    to standard LOD.  (Since starting multiday polar motion combinations
    we have been correcting the sign error in the JPL LOD values.

0.2 Starting week 989 we include as Section 5.0 of this summary, the
    Earth rotation parameter estimates from the constrained combination
    solution in the IERS format.

0.3 Starting Week 980 we include multiday polar motion/UT1 estimates into
    our analysis.   We also no longer need to deconstrain the AC sinex 
    files although to add back into the covariance matrices at rotational
    uncertainity which is coupled between station positions and EOPs.


0.4 Starting Week 0943 we base the analysis on the ITRF96 system and the
    reference site list for the ITRF96 system. The increase in the number
    of sites used to obtain analysis variances increases the variance 
    factors for all centers by factors between 2 and 4.  The Chi**2 for
    the center residuals is now much closer to 1.0

0.5 Starting Week 0931 we added a new residual file to our submissions.  
    A description of the contents of the file is given in the file itself.
    We also changed the treatment of the translation of the individual 
    AC solutions.  The generation of the weighting factors and the constrained
    combined solution remains unchanged.  However, in the unconstrained 
    analyses (used for AC comparisons) we now allow explicit translation
    and scale parameters in the solution.  The net effect is to generate
    more realisitic sigmas for the center of mass position estimates and to
    make the coordinate estimates immune to real center of mass translations
    and scale changes. 

0.6 Starting Week 0901 we started using a new apriori file not Non-ITRF94 coordinates
    based on the analysis of week 0822-0900 sinex files.

1.0 Analysis Procedures:

(1) Each centers sinex solutions are de-constrained by adding back
 in a rotational uncertainty.
 
(2) Covariance matrices from each center are re-scaled to generate
 unit increment in chi square per degree in the tight constraints solution.
 The values are are based in the chi**2 per degree of freedom increment
 when the loosely constrained solution is constrained to the ITRF1996
 coordinates of the 55 Reference sites.  Orientation changes are estimated
 in this step, but translations and scale are NOT estimated.
 
(3) The tight solution is generated with the following constraints on
 the core sites.  Starting Week 0858, ITRF94 is used for the coordinate
 system.  Starting Week 0878, we changed the site selection here to use
 WTZR and GOL2.  Starting Week 0897 we stopped using MADR as a core site.
 We continue not use MADR in the reference site list.

 Earth rotation parameters are estimated for each center (even when not given
 in the original SINEX files.  In this case the partial derivatives are
 computed from the station coordinates).

(4) When the combined and center solutions are compared to ITRF97, the
heights are given a variance 10 times larger than the horizontal coordinates.
The same variance ratio is used when the RMS to ITRF97 core sites is
computed.

(5) Starting Week 0826, we show the differences in the coordinates for
five non-core sites, in remote areas.  Four of these sites are processed 
by all centers.  These sites are not used in the RMS calculations or 
the transformation estimation to the 13 core sites.  The change in procedure
was because FORT is no longer being processed by all centers.  AREQ has
been added to the list for this reason.  After Week 0943, when the reference
site list increased we no long summarize additional sites.

(6) Starting Week 0826, we start to show a comparison of each centers
results with the combined solution for the week.  When the constraints
are applied to loose combined solution to translate, rotate and scale it
to the ITRF97, the constraints are actually applied using the full 
covariance matrix of the combined solution (rather than simply directly
applying the transformations to the coordinates).  The approach we use
constrains the center of mass to have zero variance relative to ITRF97.
The result of this is that the combined solution has the same center
of mass position and scale as ITRF97, and therefore when each of the
centers are compared to the combined solution, they generate very similar
translations and scales as they do the ITRF97.  Had we simply applied
the transformations to the coordinates, the translations and scale would
have been the difference between the combined translations and scale and
the individual center's translations and scale.
This new section is numbered 4.0.

(7) Starting Week 868, we updated the coordinates of sites not included
in the ITRF94 coordinate files.  This introduces a discontinuity in the
the adjustments to some of the "isolated" sites shown below.

 
 2.0 COMBINED FIT TO IGS97 
 Transformation of loose solution COMBINED to IGS97
 -----------------------------------------------
 For   46 Sites, RMS after 7 parameter transformation   7.3 mm  COMBINED wrt IGS97 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
   -0.3    1.8     -6.9    1.8      6.3    2.9  -1.127  0.076  COMBINED  CoM
 
 Adjustments to core site positions for COMBINED
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 VILL    -1.4    0.5   -1.0    0.6    7.1    1.8  COMBINED wrt IGS97
 MAS1     2.2    0.6   -3.3    0.7    3.8    2.4  COMBINED wrt IGS97
 FORT    -3.2    1.0    6.1    1.3   -4.6    4.5  COMBINED wrt IGS97
 BRAZ    -4.4    0.9    3.7    1.0    3.2    3.7  COMBINED wrt IGS97
 KOUR     0.4    0.7    2.6    0.8    5.1    2.9  COMBINED wrt IGS97
 BRMU     2.0    0.9   -2.7    0.9  -16.0    3.8  COMBINED wrt IGS97
 THU1    -1.4    1.5   -5.5    1.3    2.7    6.6  COMBINED wrt IGS97
 SANT    -4.0    0.9    5.6    0.8  -20.1    2.4  COMBINED wrt IGS97
 WES2    -0.5    0.7   -8.2    0.7   -3.4    2.4  COMBINED wrt IGS97
 GODE     1.9    0.6   -3.3    0.6   -7.8    2.4  COMBINED wrt IGS97
 ALGO     0.8    0.6   -0.5    0.5   -1.0    1.7  COMBINED wrt IGS97
 NLIB    -1.2    0.7   -5.3    0.8    6.7    3.3  COMBINED wrt IGS97
 MDO1     2.6    0.7    2.0    0.8    2.8    2.7  COMBINED wrt IGS97
 PIE1     6.7    0.7    6.2    0.9   10.7    2.8  COMBINED wrt IGS97
 YELL     0.4    0.7    2.2    0.6   -4.5    2.2  COMBINED wrt IGS97
 DRAO     4.3    0.7    3.4    0.6    1.6    2.0  COMBINED wrt IGS97
 CHAT     2.8    0.6    0.8    0.6    3.0    2.0  COMBINED wrt IGS97
 AUCK     1.8    0.8   -4.8    0.9   -6.1    2.9  COMBINED wrt IGS97
 MCM4     0.9    0.7   -2.9    0.7   -1.4    3.5  COMBINED wrt IGS97
 MAC1     4.9    0.6   -2.3    0.5    8.9    1.9  COMBINED wrt IGS97
 TIDB    -3.4    0.7   -3.5    0.6   19.4    2.5  COMBINED wrt IGS97
 HOB2    -2.4    0.6   -1.9    0.6   25.4    2.1  COMBINED wrt IGS97
 TSKB     4.3    0.7    6.4    0.7  -11.7    2.1  COMBINED wrt IGS97
 PERT    -2.6    0.7   -0.4    0.7  -15.4    2.9  COMBINED wrt IGS97
 YAR1    -0.5    0.7   -2.2    0.8   20.5    2.9  COMBINED wrt IGS97
 CAS1    -4.3    0.6    0.5    0.6   -1.7    2.1  COMBINED wrt IGS97
 IRKT     0.7    0.8   -0.7    0.7   -6.6    2.6  COMBINED wrt IGS97
 LHAS    -1.8    3.8   -0.1    5.8   -1.8   17.7  COMBINED wrt IGS97
 DAV1    -6.2    0.8   -0.5    0.7  -14.4    2.5  COMBINED wrt IGS97
 KERG    -3.7    0.8   -1.7    0.7  -18.8    2.3  COMBINED wrt IGS97
 KIT3    -2.3    0.8    2.5    0.8  -13.7    2.8  COMBINED wrt IGS97
 BAHR     1.0    0.6    9.8    0.6  -11.5    2.1  COMBINED wrt IGS97
 ZWEN    -1.9    0.6   -1.1    0.5   -4.5    1.9  COMBINED wrt IGS97
 TROM    -4.2    1.0    7.5    1.3   -7.8    3.4  COMBINED wrt IGS97
 MATE    -0.7    0.7   -0.2    0.7    8.0    2.3  COMBINED wrt IGS97
 GRAZ    -0.3    0.8   -7.8    0.7   11.0    2.5  COMBINED wrt IGS97
 POTS    -0.3    0.5   -3.7    0.5    4.4    1.6  COMBINED wrt IGS97
 WTZR     0.4    0.5   -1.8    0.5    8.0    1.6  COMBINED wrt IGS97
 ONSA     2.6    0.5   -1.2    0.5   -5.1    1.7  COMBINED wrt IGS97
 NYAL    -3.1    0.8    2.4    0.8   12.7    3.7  COMBINED wrt IGS97
 WSRT     1.3    0.5   -2.3    0.4    9.3    1.4  COMBINED wrt IGS97
 Reference sites NOT used 
 MADR    18.6    0.8  -45.1    0.7   -0.7    2.8  COMBINED wrt IGS97
 
 
 3.0 CENTER FITS TO IGS1997
 CENTER COD
 -------------------
 VARIANCE RESCALING FACTOR FOR COD 104.19
 
 Transformation of loose solution COD to IGS97
 -----------------------------------------------
 For   42 Sites, RMS after 7 parameter transformation   7.5 mm  COD wrt IGS97 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
   -7.4    2.4    -14.0    2.4      9.0    3.5  -1.198  0.114  COD  CoM
 
 Adjustments to core site positions for COD
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 VILL    -1.5    0.9   -1.9    0.8   13.9    3.0  COD wrt IGS97
 MAS1     1.9    1.0   -5.2    1.0    9.0    4.2  COD wrt IGS97
 FORT    -4.2    1.9   10.6    2.2  -12.4    9.6  COD wrt IGS97
 BRAZ    -5.4    1.3    3.4    1.3    0.2    5.0  COD wrt IGS97
 KOUR    -1.8    0.9    2.7    1.0    3.4    3.3  COD wrt IGS97
 BRMU     2.4    1.3   -3.9    1.2  -19.7    5.8  COD wrt IGS97
 SANT    -3.4    1.3    6.6    1.0  -20.1    3.1  COD wrt IGS97
 WES2    -0.8    1.2   -9.0    0.9  -12.0    4.1  COD wrt IGS97
 GODE     1.2    1.0   -4.0    0.9  -12.0    3.6  COD wrt IGS97
 ALGO     0.7    0.9   -0.9    0.7   -7.9    2.8  COD wrt IGS97
 NLIB    -1.4    1.2   -5.1    1.1   -2.9    5.2  COD wrt IGS97
 MDO1     2.4    1.0    3.2    1.0   -3.3    4.0  COD wrt IGS97
 PIE1     7.1    1.1    6.7    1.0    4.1    4.2  COD wrt IGS97
 YELL     1.3    1.2    2.2    0.8  -14.0    3.5  COD wrt IGS97
 DRAO     5.9    1.0    3.1    0.8   -7.1    2.9  COD wrt IGS97
 CHAT     3.6    1.0    1.5    0.9    8.2    3.1  COD wrt IGS97
 AUCK     3.5    1.8   -5.6    1.7   -0.4    6.5  COD wrt IGS97
 MCM4     0.6    1.2   -1.6    1.0   -5.6    6.3  COD wrt IGS97
 MAC1     5.4    0.9   -1.8    0.7   10.3    2.8  COD wrt IGS97
 TIDB    -2.1    0.9   -3.5    0.8   19.9    3.5  COD wrt IGS97
 HOB2    -1.5    0.9   -1.8    0.7   25.8    2.8  COD wrt IGS97
 TSKB     2.5    1.2    5.5    1.0  -14.8    3.6  COD wrt IGS97
 PERT    -2.9    1.0   -0.8    0.9  -14.5    4.5  COD wrt IGS97
 YAR1    -1.3    0.9   -2.1    0.9   24.2    3.8  COD wrt IGS97
 CAS1    -5.3    0.9    1.2    0.7   -5.5    3.0  COD wrt IGS97
 IRKT    -1.8    1.3   -0.1    1.0   -8.7    3.9  COD wrt IGS97
 LHAS    -4.2    5.0   -0.4    6.1    5.0   24.8  COD wrt IGS97
 DAV1    -6.4    1.1   -0.7    0.9  -23.7    3.6  COD wrt IGS97
 KERG    -3.9    1.1   -2.1    0.9  -24.7    3.3  COD wrt IGS97
 KIT3    -4.3    1.4    4.0    1.2  -10.2    5.4  COD wrt IGS97
 BAHR    -1.3    0.8   11.2    0.8  -11.0    3.1  COD wrt IGS97
 ZWEN    -2.0    1.0   -0.9    0.7    3.4    3.2  COD wrt IGS97
 MATE     0.0    1.0   -0.9    0.9   15.1    3.6  COD wrt IGS97
 GRAZ     0.5    1.2   -7.4    0.9   19.0    3.6  COD wrt IGS97
 POTS     0.1    0.9   -3.8    0.7   15.6    2.5  COD wrt IGS97
 WTZR     0.8    0.9   -1.9    0.7   17.4    2.5  COD wrt IGS97
 ONSA     3.4    1.0   -0.9    0.7    3.5    3.0  COD wrt IGS97
 WSRT     1.4    0.8   -2.8    0.7   21.2    2.4  COD wrt IGS97
 Reference sites NOT used 
 MADR    18.9    1.0  -45.8    0.9    5.6    3.5  COD wrt IGS97
 
 CENTER EMR
 -------------------
 VARIANCE RESCALING FACTOR FOR EMR 110.285
 
 Transformation of loose solution EMR to IGS97
 -----------------------------------------------
 For   22 Sites, RMS after 7 parameter transformation   9.2 mm  EMR wrt IGS97 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
  -15.9   22.3     -0.4   23.7    -13.2   26.0  -0.182  0.817  EMR  CoM
 
 Adjustments to core site positions for EMR
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 VILL    -0.8    4.2    2.3    4.5   -3.2   15.8  EMR wrt IGS97
 MAS1     1.0    4.5   -1.9    5.6   -9.3   19.3  EMR wrt IGS97
 FORT    -4.7   10.5   -7.2   27.0    5.2   47.3  EMR wrt IGS97
 KOUR    -2.3    8.2   -7.9    9.2   30.6   34.8  EMR wrt IGS97
 ALGO    -0.3    4.5   -2.5    4.3   -1.5   15.4  EMR wrt IGS97
 PIE1     6.0    4.5    5.2    5.2   21.3   17.0  EMR wrt IGS97
 YELL    -3.7    5.1    2.7    3.9   -6.4   17.3  EMR wrt IGS97
 DRAO     0.6    4.5    4.1    4.2    7.3   15.1  EMR wrt IGS97
 CHAT     0.8    5.6    0.2    7.5  -16.6   18.6  EMR wrt IGS97
 MCM4     0.4    9.7   -3.9    9.0   20.6   40.7  EMR wrt IGS97
 MAC1     5.7    5.5   -4.6    4.7    2.0   19.5  EMR wrt IGS97
 TIDB    -2.1    5.8   -5.6    4.9   17.6   21.1  EMR wrt IGS97
 TSKB     1.3    5.2    5.0    4.3  -13.4   16.1  EMR wrt IGS97
 CAS1    -3.2    6.4   -0.4    5.4  -10.8   21.7  EMR wrt IGS97
 IRKT    -0.2    5.7   -3.5    4.4   -1.9   17.5  EMR wrt IGS97
 KERG    -1.6    6.8   -7.3    6.7    2.5   19.5  EMR wrt IGS97
 BAHR     1.8    4.6   10.4    5.3   -4.2   17.6  EMR wrt IGS97
 ONSA     3.7    4.7    3.8    3.9  -18.5   15.3  EMR wrt IGS97
 NYAL    -4.5    4.7    4.6    4.2    0.2   25.6  EMR wrt IGS97
 Reference sites NOT used 
 
 CENTER GFZ
 -------------------
 VARIANCE RESCALING FACTOR FOR GFZ 107.05
 
 Transformation of loose solution GFZ to IGS97
 -----------------------------------------------
 For   40 Sites, RMS after 7 parameter transformation   6.7 mm  GFZ wrt IGS97 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
    1.7 3109.6     -0.5 3109.6      3.1 3109.6  -1.133  0.146  GFZ  CoM
 
 Adjustments to core site positions for GFZ
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 VILL    -2.1    0.9    1.1    0.9    4.2    3.2  GFZ wrt IGS97
 MAS1     2.5    1.2   -0.2    1.4   -2.8    5.6  GFZ wrt IGS97
 FORT    -2.0    1.6    3.0    1.9   -7.3    7.4  GFZ wrt IGS97
 BRAZ    -3.6    1.5    4.0    1.6   10.0    6.1  GFZ wrt IGS97
 KOUR     3.9    2.0    0.5    2.3   -0.8    9.0  GFZ wrt IGS97
 BRMU     2.1    1.7   -1.1    1.6  -17.1    7.6  GFZ wrt IGS97
 THU1    -2.4    2.4   -5.5    1.9   -2.8   11.4  GFZ wrt IGS97
 SANT    -2.4    1.5    5.5    1.3  -12.3    4.7  GFZ wrt IGS97
 WES2    -0.8    1.5   -6.9    1.3    3.0    5.3  GFZ wrt IGS97
 GODE     2.1    1.4   -2.4    1.3   -5.8    5.2  GFZ wrt IGS97
 ALGO     0.4    1.0    0.8    0.8    5.2    3.1  GFZ wrt IGS97
 NLIB    -0.8    1.6   -3.7    1.5    7.7    6.8  GFZ wrt IGS97
 MDO1     3.2    1.4    0.8    1.5    2.5    5.9  GFZ wrt IGS97
 YELL     0.0    1.5    2.8    1.1    0.8    4.9  GFZ wrt IGS97
 DRAO     4.6    1.3    3.4    1.1    4.9    4.0  GFZ wrt IGS97
 CHAT     3.2    1.0    0.3    1.0    1.5    3.3  GFZ wrt IGS97
 AUCK     3.3    1.3   -4.4    1.2   -4.5    4.6  GFZ wrt IGS97
 MCM4    -0.9    1.6   -2.5    1.3    4.6    8.1  GFZ wrt IGS97
 MAC1     4.7    1.0   -2.6    0.8    8.9    3.2  GFZ wrt IGS97
 TIDB    -3.3    1.3   -4.6    1.1   19.8    4.6  GFZ wrt IGS97
 HOB2    -2.8    1.3   -2.2    1.0   27.8    4.3  GFZ wrt IGS97
 TSKB     6.4    1.5    6.5    1.3   -7.3    4.9  GFZ wrt IGS97
 PERT    -1.2    1.5   -1.7    1.5  -19.9    5.9  GFZ wrt IGS97
 CAS1    -5.7    1.3    0.1    1.1   11.0    4.4  GFZ wrt IGS97
 IRKT     1.6    1.7   -3.4    1.2    5.2    5.0  GFZ wrt IGS97
 DAV1    -7.6    1.4   -1.3    1.3   -1.5    5.3  GFZ wrt IGS97
 KERG    -3.4    1.6   -2.5    1.5  -12.4    5.1  GFZ wrt IGS97
 KIT3    -0.9    1.8    0.9    1.6  -10.9    7.1  GFZ wrt IGS97
 BAHR     2.4    1.0    8.0    1.1  -13.6    3.8  GFZ wrt IGS97
 ZWEN    -1.4    1.0   -1.8    0.8  -10.3    3.2  GFZ wrt IGS97
 MATE    -0.5    1.6    1.1    1.4    2.2    5.5  GFZ wrt IGS97
 POTS    -0.9    1.2   -3.0    1.0   -3.6    3.8  GFZ wrt IGS97
 WTZR     0.1    1.2   -0.9    1.0    3.4    3.7  GFZ wrt IGS97
 ONSA     1.7    1.3   -0.2    1.0  -13.4    4.1  GFZ wrt IGS97
 NYAL    -3.1    1.2    2.2    1.0   10.5    5.6  GFZ wrt IGS97
 WSRT     0.5    1.2   -1.0    1.0    4.7    3.8  GFZ wrt IGS97
 Reference sites NOT used 
 MADR    18.6    1.4  -42.7    1.2   -6.1    4.8  GFZ wrt IGS97
 
 CENTER SIO
 -------------------
 VARIANCE RESCALING FACTOR FOR SIO 3.078
 
 Transformation of loose solution SIO to IGS97
 -----------------------------------------------
 For   42 Sites, RMS after 7 parameter transformation   4.2 mm  SIO wrt IGS97 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
  -14.5    5.3      2.5    5.3    -66.1   13.1  -1.423  0.199  SIO  CoM
 
 Adjustments to core site positions for SIO
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 VILL     0.2    1.2   -1.5    1.8   -1.0    3.7  SIO wrt IGS97
 MAS1     3.3    1.2   -2.6    2.0    2.3    4.0  SIO wrt IGS97
 FORT    -0.7    2.4    1.2    4.3    6.9    8.4  SIO wrt IGS97
 KOUR     4.5    2.6    0.9    4.9   14.2   10.2  SIO wrt IGS97
 BRMU     3.0    2.2    0.9    3.8   -5.0    8.6  SIO wrt IGS97
 THU1    -3.3    2.5   -6.6    2.6    7.4    9.9  SIO wrt IGS97
 SANT    -1.8    4.3    0.6    5.3  -38.2    9.9  SIO wrt IGS97
 WES2     0.4    1.7   -5.5    2.7    5.6    4.5  SIO wrt IGS97
 GODE     2.4    1.7    0.2    2.7    2.4    4.8  SIO wrt IGS97
 ALGO     1.3    1.4    0.2    2.3    6.4    4.1  SIO wrt IGS97
 NLIB    -1.4    2.0    3.6    3.4   18.3    7.3  SIO wrt IGS97
 MDO1     4.0    1.9    7.9    3.2   15.8    5.9  SIO wrt IGS97
 YELL    -1.7    1.8    2.6    2.3    4.3    4.5  SIO wrt IGS97
 DRAO     2.9    1.8    8.2    2.5   13.2    4.7  SIO wrt IGS97
 CHAT     2.2    2.4   -1.3    3.2   -2.2    5.8  SIO wrt IGS97
 AUCK     0.9    2.2   -3.4    3.6   -7.5    5.6  SIO wrt IGS97
 MCM4     3.3    1.7   -5.6    1.8    0.5    5.8  SIO wrt IGS97
 MAC1     6.0    1.9   -4.0    2.5    7.1    5.3  SIO wrt IGS97
 TIDB    -6.3    2.5   -3.7    3.6   17.6    6.9  SIO wrt IGS97
 HOB2    -3.3    2.1   -1.8    3.3   27.5    6.0  SIO wrt IGS97
 TSKB     3.6    2.0    4.4    2.5  -12.9    4.1  SIO wrt IGS97
 PERT    -5.0    1.9   -2.4    3.1  -10.4    6.0  SIO wrt IGS97
 YAR1    -2.9    1.9   -4.8    2.8   21.0    5.1  SIO wrt IGS97
 CAS1     0.7    1.7   -1.0    2.2    3.2    5.0  SIO wrt IGS97
 IRKT     1.0    2.3   -2.4    3.6  -16.3    6.4  SIO wrt IGS97
 LHAS    -4.0    6.3   -1.3   21.9  -11.3   26.6  SIO wrt IGS97
 DAV1    -2.9    2.2    4.3    2.7    0.7    6.0  SIO wrt IGS97
 KERG    -3.7    1.9    1.8    2.8   -7.2    5.0  SIO wrt IGS97
 KIT3    -3.4    1.5   -0.6    2.2  -19.5    4.4  SIO wrt IGS97
 BAHR     0.6    1.8    8.1    2.9   -8.3    5.9  SIO wrt IGS97
 ZWEN    -1.9    1.5    1.3    2.1   -8.6    4.5  SIO wrt IGS97
 TROM    -3.1    1.3    7.5    1.6  -13.0    3.9  SIO wrt IGS97
 MATE    -0.5    1.3    1.6    1.9    0.1    4.1  SIO wrt IGS97
 GRAZ     0.6    1.4   -6.9    1.5   -0.8    4.0  SIO wrt IGS97
 POTS     0.8    1.1   -2.6    1.2   -7.0    2.9  SIO wrt IGS97
 WTZR     1.4    1.0   -0.6    1.2   -2.6    3.0  SIO wrt IGS97
 ONSA     3.8    1.0   -0.6    1.2  -12.7    2.8  SIO wrt IGS97
 NYAL    -3.5    1.7    1.7    1.9    8.5    5.8  SIO wrt IGS97
 WSRT     2.8    0.9   -1.5    1.1   -2.5    2.5  SIO wrt IGS97
 Reference sites NOT used 
 
 CENTER NGS
 -------------------
 VARIANCE RESCALING FACTOR FOR NGS 605
 
 Transformation of loose solution NGS to IGS97
 -----------------------------------------------
 For   43 Sites, RMS after 7 parameter transformation   8.2 mm  NGS wrt IGS97 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
   20.7   15.3     -4.4   16.0     34.5   47.9  -1.348  0.672  NGS  CoM
 
 Adjustments to core site positions for NGS
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 VILL     1.3    3.2   -4.1    5.1    2.1   10.0  NGS wrt IGS97
 MAS1     4.0    4.3   -4.2    7.3   -8.3   13.3  NGS wrt IGS97
 FORT     8.8    6.7    8.9   15.3   10.6   21.8  NGS wrt IGS97
 BRAZ    10.3    7.8    3.6   14.0    6.7   17.5  NGS wrt IGS97
 KOUR    11.1    5.7   10.7    9.3   25.1   15.7  NGS wrt IGS97
 BRMU    -2.0    4.1    1.5    7.1    0.7   13.8  NGS wrt IGS97
 THU1    -0.6    4.4   -7.5    4.3    4.2   15.5  NGS wrt IGS97
 SANT     3.8   11.7    9.4   15.6  -30.0   16.5  NGS wrt IGS97
 WES2    -3.8    3.6   -6.4    6.0    9.5   10.4  NGS wrt IGS97
 GODE    -0.4    3.4   -1.7    5.7    1.3   10.9  NGS wrt IGS97
 ALGO    -2.7    3.4   -1.0    5.7    4.9   10.1  NGS wrt IGS97
 NLIB    -6.1    3.4   -0.3    5.7   23.6   11.3  NGS wrt IGS97
 MDO1    -5.5    4.3    4.2    7.2   12.9   13.4  NGS wrt IGS97
 PIE1    -3.0    4.1    8.1    6.5   16.0   12.2  NGS wrt IGS97
 YELL    -1.3    3.6    0.5    5.2   -3.1   10.7  NGS wrt IGS97
 DRAO    -3.0    3.8    2.3    5.9    4.0   11.1  NGS wrt IGS97
 CHAT     7.3    6.2   -8.1    8.0   -7.9   13.9  NGS wrt IGS97
 AUCK     3.0    6.7  -11.9    7.6   -1.7   14.4  NGS wrt IGS97
 MCM4     4.3    5.8   -2.8    6.8    6.8   16.2  NGS wrt IGS97
 MAC1     7.0    3.7   -2.2    5.5   15.3   13.1  NGS wrt IGS97
 HOB2    -3.0    4.5   -1.3    5.2   28.4   13.7  NGS wrt IGS97
 TSKB    -4.4    7.5   -5.0    9.6  -26.5   15.1  NGS wrt IGS97
 PERT    -5.7    6.8    6.6    8.2   -7.8   14.8  NGS wrt IGS97
 CAS1    -2.0    4.4   -2.3    5.8   -0.1   12.6  NGS wrt IGS97
 IRKT    -3.6    5.3   -7.0    6.7  -17.4   12.6  NGS wrt IGS97
 DAV1    -4.6    5.5   -0.1    6.8   -6.1   13.6  NGS wrt IGS97
 KERG    -0.8    5.0   -0.2    7.7    1.1   13.2  NGS wrt IGS97
 KIT3    -4.3    4.6    1.1    7.4  -11.3   14.3  NGS wrt IGS97
 BAHR     1.8    4.6    8.7    6.7  -15.9   12.5  NGS wrt IGS97
 ZWEN    -4.0    2.8    0.8    4.0  -11.9   10.1  NGS wrt IGS97
 TROM    -4.8    2.8    8.0    3.6  -20.0   10.1  NGS wrt IGS97
 MATE    -1.1    3.2   -1.1    5.6   -2.2   12.2  NGS wrt IGS97
 GRAZ    -1.0    3.0  -11.9    4.8   -5.4   11.9  NGS wrt IGS97
 POTS    -0.6    2.6   -6.3    3.9   -8.6    9.5  NGS wrt IGS97
 WTZR     0.0    2.6   -3.5    4.0   -9.3    9.4  NGS wrt IGS97
 ONSA     1.7    2.6   -4.8    3.8  -16.8    9.5  NGS wrt IGS97
 NYAL    -1.8    3.2    2.5    3.7    4.0   12.1  NGS wrt IGS97
 WSRT     1.9    2.6   -3.2    3.9   -8.1    9.2  NGS wrt IGS97
 Reference sites NOT used 
 
 
 4.0 CENTER FITS TO COMBINED SOLUTION 
 CENTER COD
 -------------------
 VARIANCE RESCALING FACTOR FOR COD 104.19
 
 Transformation of loose solution COD to COMB
 -----------------------------------------------
 For   43 Sites, RMS after 7 parameter transformation   1.4 mm  COD wrt COMB 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
   -7.5    2.4    -13.5    2.4      8.7    3.5  -1.220  0.105  COD  CoM
 
 Adjustments to core site positions for COD
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 VILL     0.1    0.9   -1.4    0.8    7.1    3.1  COD wrt COMB
 MAS1    -0.1    1.0   -2.2    1.0    5.7    4.2  COD wrt COMB
 FORT    -0.8    1.9    4.3    2.2   -7.3    9.6  COD wrt COMB
 BRAZ    -0.8    1.3   -0.4    1.3   -2.6    5.0  COD wrt COMB
 KOUR    -2.1    0.9    0.0    1.0   -1.1    3.3  COD wrt COMB
 BRMU     0.2    1.3   -1.3    1.2   -3.0    5.8  COD wrt COMB
 SANT     0.9    1.2    1.2    1.0    0.4    3.1  COD wrt COMB
 AREQ    -0.2    1.2   -0.1    1.1   -1.9    4.2  COD wrt COMB
 WES2    -0.6    1.2   -0.9    0.9   -8.0    4.1  COD wrt COMB
 GODE    -1.0    1.0   -0.7    0.9   -3.6    3.6  COD wrt COMB
 ALGO    -0.6    1.0   -0.4    0.7   -6.2    2.8  COD wrt COMB
 NLIB    -0.6    1.2    0.4    1.1   -9.0    5.2  COD wrt COMB
 MDO1    -0.5    1.0    1.5    1.0   -5.5    4.0  COD wrt COMB
 PIE1     0.1    1.1    0.9    1.0   -5.9    4.2  COD wrt COMB
 YELL     0.4    1.1    0.3    0.8   -9.0    3.5  COD wrt COMB
 DRAO     1.1    1.0    0.1    0.8   -8.1    2.9  COD wrt COMB
 FAIR    -0.3    1.2   -0.2    0.9   -5.5    3.8  COD wrt COMB
 KOKB     0.2    1.1   -2.1    1.2  -11.2    4.0  COD wrt COMB
 CHAT     0.8    1.0    1.1    0.9    5.1    3.1  COD wrt COMB
 AUCK     1.7    1.8   -0.3    1.7    5.6    6.5  COD wrt COMB
 MCM4    -0.5    1.2    1.5    1.0   -4.3    6.3  COD wrt COMB
 MAC1     0.5    1.0    0.8    0.7    1.2    2.8  COD wrt COMB
 TIDB     1.4    1.0    0.4    0.8    0.2    3.5  COD wrt COMB
 HOB2     0.9    0.9    0.5    0.7    0.1    2.8  COD wrt COMB
 GUAM     0.1    1.1    0.0    1.0    3.1    4.1  COD wrt COMB
 TSKB    -1.3    1.1   -0.3    0.9   -3.1    3.5  COD wrt COMB
 PERT    -0.1    1.0   -0.2    1.0    0.5    4.5  COD wrt COMB
 YAR1    -0.6    1.0    0.3    0.9    3.4    3.8  COD wrt COMB
 CAS1    -1.1    1.0    0.8    0.7   -4.1    3.0  COD wrt COMB
 IRKT    -1.7    1.3    0.9    1.0   -2.1    3.9  COD wrt COMB
 LHAS    -1.7    5.0   -0.1    6.1    6.7   24.8  COD wrt COMB
 DAV1    -0.3    1.1   -0.5    0.9   -9.5    3.6  COD wrt COMB
 KERG    -0.2    1.1   -0.6    0.9   -6.2    3.3  COD wrt COMB
 KIT3    -1.2    1.4    1.4    1.2    3.5    5.4  COD wrt COMB
 BAHR    -1.6    0.8    1.2    0.8    0.4    3.1  COD wrt COMB
 MALI    -1.6    1.2    0.3    1.2    7.3    4.5  COD wrt COMB
 ZWEN     0.5    1.0   -0.2    0.7    8.1    3.2  COD wrt COMB
 MATE     1.1    1.0   -1.1    0.9    7.3    3.6  COD wrt COMB
 GRAZ     1.2    1.2   -0.1    0.9    8.3    3.6  COD wrt COMB
 POTS     0.8    0.9   -0.6    0.7   11.4    2.5  COD wrt COMB
 WTZR     0.8    0.9   -0.6    0.7    9.7    2.6  COD wrt COMB
 ONSA     1.2    1.0   -0.3    0.7    8.9    3.0  COD wrt COMB
 WSRT     0.4    0.8   -1.1    0.7   12.2    2.4  COD wrt COMB
 Reference sites NOT used 
 MADR     0.6    1.0   -1.1    0.9    6.7    3.5  COD wrt COMB
 
 CENTER EMR
 -------------------
 VARIANCE RESCALING FACTOR FOR EMR 110.285
 
 Transformation of loose solution EMR to COMB
 -----------------------------------------------
 For   23 Sites, RMS after 7 parameter transformation   2.9 mm  EMR wrt COMB 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
  -15.8   22.2     -0.4   23.6    -14.9   26.0  -0.272  0.720  EMR  CoM
 
 Adjustments to core site positions for EMR
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 VILL     0.9    4.3    4.8    4.5   -8.7   16.0  EMR wrt COMB
 MAS1    -0.6    4.6    3.2    5.6  -11.8   19.5  EMR wrt COMB
 FORT    -0.6   10.3  -11.6   27.6   10.3   47.4  EMR wrt COMB
 KOUR    -1.6    8.1   -8.6    9.0   26.2   34.9  EMR wrt COMB
 AREQ     4.0    6.7   -0.3    6.6    8.9   21.1  EMR wrt COMB
 ALGO    -0.2    4.7    0.0    4.2    1.3   15.5  EMR wrt COMB
 PIE1     1.0    4.5    1.0    5.1   12.1   17.1  EMR wrt COMB
 YELL    -2.9    5.1    2.1    3.7    0.1   17.3  EMR wrt COMB
 DRAO    -2.1    4.5    2.5    4.0    7.6   15.0  EMR wrt COMB
 FAIR    -2.0    4.9    4.3    3.8    3.1   17.0  EMR wrt COMB
 KOKB    -1.9    5.1    1.3    6.7  -13.1   19.2  EMR wrt COMB
 CHAT     0.3    5.9    0.7    7.9  -20.2   18.8  EMR wrt COMB
 MCM4     0.9    9.9   -0.2    9.1   20.9   41.0  EMR wrt COMB
 MAC1     2.8    5.8   -0.9    5.0   -7.6   19.9  EMR wrt COMB
 TIDB     3.6    5.9   -0.1    5.1   -2.2   21.5  EMR wrt COMB
 GUAM    -4.9    5.1   -2.8    4.8  -11.9   18.1  EMR wrt COMB
 TSKB    -0.8    4.9   -0.3    4.0   -0.1   15.8  EMR wrt COMB
 CAS1     2.1    6.7    0.8    5.5  -10.1   22.1  EMR wrt COMB
 IRKT     0.3    5.7   -2.4    4.4    6.6   17.4  EMR wrt COMB
 KERG     2.7    6.8   -3.6    6.8   20.6   19.7  EMR wrt COMB
 BAHR     1.7    4.7    2.0    5.4    8.6   17.7  EMR wrt COMB
 ONSA     1.1    4.9    5.8    3.9  -11.3   15.4  EMR wrt COMB
 NYAL    -2.0    4.8    2.4    4.2  -10.2   25.9  EMR wrt COMB
 Reference sites NOT used 
 
 CENTER GFZ
 -------------------
 VARIANCE RESCALING FACTOR FOR GFZ 107.05
 
 Transformation of loose solution GFZ to COMB
 -----------------------------------------------
 For   41 Sites, RMS after 7 parameter transformation   1.4 mm  GFZ wrt COMB 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
    2.1 3109.6     -0.6 3109.6      3.6 3109.6  -0.970  0.134  GFZ  CoM
 
 Adjustments to core site positions for GFZ
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 VILL    -0.6    0.9    2.1    0.9   -4.7    3.2  GFZ wrt COMB
 MAS1     0.3    1.2    3.1    1.4   -8.4    5.6  GFZ wrt COMB
 FORT     0.6    1.6   -3.2    2.0   -4.2    7.4  GFZ wrt COMB
 BRAZ     0.1    1.5    0.2    1.6    5.4    6.2  GFZ wrt COMB
 KOUR     3.0    2.0   -2.4    2.4   -7.4    9.0  GFZ wrt COMB
 BRMU    -0.4    1.7    1.0    1.6   -2.7    7.6  GFZ wrt COMB
 THU1    -1.0    2.4   -0.7    1.9   -7.0   11.5  GFZ wrt COMB
 SANT     0.7    1.5   -0.3    1.3    6.7    4.7  GFZ wrt COMB
 AREQ     0.9    1.4    1.2    1.4    5.3    5.9  GFZ wrt COMB
 WES2    -0.6    1.5    0.7    1.3    4.7    5.3  GFZ wrt COMB
 GODE    -0.2    1.4    0.3    1.3    0.4    5.2  GFZ wrt COMB
 ALGO    -0.9    1.0    0.6    0.8    4.6    3.1  GFZ wrt COMB
 NLIB    -0.2    1.6    1.1    1.6   -0.5    6.8  GFZ wrt COMB
 MDO1    -0.1    1.4   -1.8    1.5   -1.8    5.9  GFZ wrt COMB
 YELL    -1.1    1.5    0.1    1.1    3.8    4.9  GFZ wrt COMB
 DRAO    -0.6    1.3   -0.6    1.1    1.9    4.0  GFZ wrt COMB
 FAIR     0.9    1.2   -0.3    0.9    3.8    3.8  GFZ wrt COMB
 KOKB     1.2    1.1    2.6    1.4   12.3    4.1  GFZ wrt COMB
 CHAT     0.1    1.1   -1.0    1.0   -1.8    3.3  GFZ wrt COMB
 AUCK     1.2    1.3    0.0    1.3    1.3    4.6  GFZ wrt COMB
 MCM4    -1.6    1.6    0.0    1.3    5.6    8.2  GFZ wrt COMB
 MAC1    -0.2    1.1   -0.6    0.8   -0.3    3.2  GFZ wrt COMB
 TIDB     0.0    1.3   -1.1    1.2    0.1    4.6  GFZ wrt COMB
 HOB2    -0.5    1.3   -0.4    1.1    2.0    4.3  GFZ wrt COMB
 GUAM     0.7    1.3   -0.7    1.5   -2.2    5.6  GFZ wrt COMB
 TSKB     1.5    1.5    0.5    1.2    3.4    4.9  GFZ wrt COMB
 PERT     1.4    1.5   -1.1    1.5   -4.9    5.9  GFZ wrt COMB
 CAS1    -1.1    1.3   -0.3    1.1   12.3    4.4  GFZ wrt COMB
 IRKT     0.6    1.7   -2.1    1.3   10.5    5.0  GFZ wrt COMB
 DAV1    -1.1    1.5   -0.5    1.3   12.4    5.3  GFZ wrt COMB
 KERG     0.3    1.7   -0.3    1.5    5.7    5.1  GFZ wrt COMB
 KIT3     1.4    1.8   -0.9    1.6    1.5    7.1  GFZ wrt COMB
 BAHR     1.5    1.0   -1.3    1.1   -3.5    3.8  GFZ wrt COMB
 MALI     1.3    1.7   -0.6    2.2   -8.2    7.5  GFZ wrt COMB
 ZWEN     0.8    1.0   -0.3    0.8   -7.4    3.2  GFZ wrt COMB
 MATE     0.4    1.6    1.5    1.4   -7.5    5.6  GFZ wrt COMB
 POTS    -0.2    1.2    0.8    1.0   -9.8    3.8  GFZ wrt COMB
 WTZR     0.0    1.2    1.0    1.0   -6.4    3.7  GFZ wrt COMB
 ONSA    -0.5    1.3    1.0    1.0  -10.0    4.2  GFZ wrt COMB
 NYAL     0.7    1.2   -0.1    1.0   -3.8    5.6  GFZ wrt COMB
 WSRT    -0.4    1.2    1.3    1.0   -6.4    3.8  GFZ wrt COMB
 Reference sites NOT used 
 MADR     0.2    1.4    2.4    1.2   -7.1    4.8  GFZ wrt COMB
 
 CENTER SIO
 -------------------
 VARIANCE RESCALING FACTOR FOR SIO 3.078
 
 Transformation of loose solution SIO to COMB
 -----------------------------------------------
 For   44 Sites, RMS after 7 parameter transformation   2.3 mm  SIO wrt COMB 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
  -13.7    5.3      2.2    5.3    -65.9   13.1  -1.371  0.190  SIO  CoM
 
 Adjustments to core site positions for SIO
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 VILL     1.9    1.2   -1.0    1.8   -9.1    3.8  SIO wrt COMB
 MAS1     1.4    1.3    0.0    2.1   -2.7    4.0  SIO wrt COMB
 FORT     2.2    2.4   -6.2    4.4   10.5    8.4  SIO wrt COMB
 KOUR     4.0    2.6   -3.1    5.0    8.1   10.2  SIO wrt COMB
 BRMU     1.2    2.3    2.2    3.9   10.0    8.6  SIO wrt COMB
 THU1    -1.3    2.5   -1.8    2.6    4.1    9.9  SIO wrt COMB
 SANT     1.8    4.4   -6.5    5.4  -18.8    9.9  SIO wrt COMB
 WES2     1.3    1.7    1.4    2.7    8.2    4.5  SIO wrt COMB
 GODE     0.7    1.7    2.1    2.6    9.4    4.8  SIO wrt COMB
 ALGO     0.7    1.4   -0.7    2.4    6.6    4.0  SIO wrt COMB
 NLIB     0.0    1.9    7.5    3.4   10.9    7.3  SIO wrt COMB
 MDO1     1.5    1.9    4.2    3.2   12.4    5.9  SIO wrt COMB
 PIE1     1.0    1.7    4.4    3.2    6.6    4.7  SIO wrt COMB
 YELL    -2.1    1.7   -0.9    2.3    8.3    4.4  SIO wrt COMB
 GOL2     1.3    1.8    4.6    3.1    6.7    5.4  SIO wrt COMB
 DRAO    -1.6    1.7    3.3    2.5   11.2    4.6  SIO wrt COMB
 KOKB    -2.5    2.1    2.5    3.5   -4.3    5.8  SIO wrt COMB
 CHAT    -0.2    2.5   -3.2    3.3   -4.8    5.9  SIO wrt COMB
 AUCK    -0.5    2.2    0.4    3.7   -0.9    5.6  SIO wrt COMB
 MCM4     3.1    1.7   -2.8    1.9    2.0    5.9  SIO wrt COMB
 MAC1     1.6    1.9   -2.3    2.6   -1.5    5.4  SIO wrt COMB
 TIDB    -2.5    2.5   -0.8    3.7   -1.3    7.0  SIO wrt COMB
 HOB2    -0.6    2.1   -0.4    3.4    2.4    6.1  SIO wrt COMB
 GUAM    -3.9    3.2   -0.2    6.1   -1.0   11.7  SIO wrt COMB
 TSKB    -1.3    1.9   -2.7    2.4   -1.0    4.0  SIO wrt COMB
 PERT    -2.3    1.9   -2.3    3.1    5.3    6.1  SIO wrt COMB
 YAR1    -2.4    1.9   -3.0    2.9    0.8    5.1  SIO wrt COMB
 CAS1     5.3    1.7   -1.3    2.3    4.9    5.1  SIO wrt COMB
 IRKT    -0.3    2.3   -1.8    3.6  -10.0    6.4  SIO wrt COMB
 LHAS    -2.6    6.3   -1.3   21.9   -9.7   26.6  SIO wrt COMB
 DAV1     3.2    2.2    5.1    2.7   14.9    6.1  SIO wrt COMB
 KERG    -0.4    1.9    3.6    2.8   11.4    5.1  SIO wrt COMB
 KIT3    -1.4    1.5   -3.0    2.2   -6.3    4.4  SIO wrt COMB
 BAHR    -0.6    1.8   -1.9    2.9    2.6    5.9  SIO wrt COMB
 MALI    -1.5    3.8   -6.5    7.3   -3.5   15.5  SIO wrt COMB
 ZWEN     0.1    1.6    2.6    2.1   -4.9    4.5  SIO wrt COMB
 TROM     1.5    1.4    0.2    1.7   -5.9    3.9  SIO wrt COMB
 MATE     0.4    1.3    1.7    2.0   -8.8    4.1  SIO wrt COMB
 GRAZ     1.1    1.4    0.7    1.5  -12.7    4.1  SIO wrt COMB
 POTS     1.4    1.1    1.0    1.3  -12.4    2.9  SIO wrt COMB
 WTZR     1.4    1.1    1.0    1.3  -11.5    3.0  SIO wrt COMB
 ONSA     1.6    1.0    0.5    1.2   -8.4    2.8  SIO wrt COMB
 NYAL     0.2    1.7   -0.3    2.0   -4.8    5.8  SIO wrt COMB
 WSRT     1.9    0.9    0.6    1.1  -12.8    2.6  SIO wrt COMB
 Reference sites NOT used 
 
 CENTER NGS
 -------------------
 VARIANCE RESCALING FACTOR FOR NGS 605
 
 Transformation of loose solution NGS to COMB
 -----------------------------------------------
 For   43 Sites, RMS after 7 parameter transformation   4.0 mm  NGS wrt COMB 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
   22.2   15.3     -4.6   15.9     33.5   47.9  -1.549  0.654  NGS  CoM
 
 Adjustments to core site positions for NGS
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 VILL     2.5    3.3   -2.1    5.2   -4.2   10.1  NGS wrt COMB
 MAS1     1.7    4.3    0.0    7.4  -11.7   13.3  NGS wrt COMB
 FORT    11.6    6.4    2.6   15.1   15.1   21.7  NGS wrt COMB
 BRAZ    14.2    7.4   -1.0   13.4    3.4   17.4  NGS wrt COMB
 KOUR    10.9    5.5    7.8    9.2   20.3   15.6  NGS wrt COMB
 BRMU    -3.2    4.2    4.6    7.3   17.8   13.8  NGS wrt COMB
 THU1     1.4    4.3   -1.1    4.3    3.7   15.5  NGS wrt COMB
 SANT     8.0   11.2    1.8   14.8   -9.8   16.2  NGS wrt COMB
 AREQ     6.5    8.2    8.8   13.8   -4.9   18.9  NGS wrt COMB
 WES2    -2.3    3.8    2.4    6.1   14.4   10.3  NGS wrt COMB
 GODE    -1.2    3.6    2.0    5.9   10.6   10.8  NGS wrt COMB
 ALGO    -2.5    3.5    0.1    5.9    7.6    9.9  NGS wrt COMB
 NLIB    -3.6    3.5    5.4    5.9   18.8   11.1  NGS wrt COMB
 MDO1    -6.3    4.4    2.2    7.4   12.0   13.2  NGS wrt COMB
 PIE1    -7.9    4.1    2.0    6.7    7.4   12.0  NGS wrt COMB
 YELL    -0.4    3.5   -1.3    5.1    3.8   10.5  NGS wrt COMB
 GOL2    -9.0    4.4    1.5    7.1    3.5   12.6  NGS wrt COMB
 DRAO    -5.8    3.7   -0.9    5.9    4.9   10.9  NGS wrt COMB
 FAIR    -2.2    4.5   -6.7    6.7  -12.2   13.4  NGS wrt COMB
 CHAT     8.5    6.6   -8.6    8.4   -9.2   14.2  NGS wrt COMB
 AUCK     5.1    7.1   -6.4    8.1    6.3   14.6  NGS wrt COMB
 MCM4     7.1    6.3    1.3    7.4    8.8   16.4  NGS wrt COMB
 MAC1     5.8    4.3    1.7    6.1    7.6   13.3  NGS wrt COMB
 HOB2     2.7    4.8    2.8    5.8    4.5   14.0  NGS wrt COMB
 TSKB    -7.2    6.9  -11.1    8.8  -11.8   14.7  NGS wrt COMB
 PERT    -1.1    6.8    9.9    8.5    9.0   15.1  NGS wrt COMB
 CAS1     3.8    5.0    0.8    6.2    2.2   12.8  NGS wrt COMB
 IRKT    -4.0    5.0   -6.2    6.5   -8.3   12.2  NGS wrt COMB
 DAV1     1.1    6.1    3.9    7.1    8.5   13.8  NGS wrt COMB
 KERG     2.3    5.3    4.8    7.8   20.2   13.4  NGS wrt COMB
 KIT3    -2.0    4.7   -0.5    7.5    4.1   14.1  NGS wrt COMB
 BAHR     0.5    4.7    0.1    6.8   -3.4   12.4  NGS wrt COMB
 MALI    10.4    6.5   -9.1   12.4   -6.5   18.1  NGS wrt COMB
 ZWEN    -2.5    3.0    2.6    4.1   -5.9   10.0  NGS wrt COMB
 TROM    -1.1    2.9    1.1    3.6  -10.4   10.1  NGS wrt COMB
 MATE    -0.8    3.4    0.1    5.8   -9.3   12.2  NGS wrt COMB
 GRAZ    -1.1    3.2   -3.2    5.0  -15.4   12.0  NGS wrt COMB
 POTS    -0.6    2.8   -1.8    4.0  -11.8    9.5  NGS wrt COMB
 WTZR    -0.7    2.8   -0.8    4.1  -16.1    9.5  NGS wrt COMB
 ONSA    -1.2    2.8   -2.7    3.8  -10.2    9.5  NGS wrt COMB
 NYAL     0.8    3.3    0.7    3.6   -6.6   12.0  NGS wrt COMB
 WSRT     0.4    2.8    0.0    4.0  -16.3    9.2  NGS wrt COMB
 Reference sites NOT used 
 
 
 5.0 EOP ESIMATES FROM THE CONSTRAINED COMBINED SOLUTION
  MJD      Xpole   Ypole  UT1-UTC    LOD  Xsig  Ysig   UTsig  LODsig  Nr Nf Nt    Xrt    Yrt  Xrtsig  Yrtsig XYcorr XUTcor YUTcor
             (10**-6")       (0.1 usec)    (10**-6")     (0.1 usec)              (10**-6"/d)    (10**-6"/d)
52609.50    2641  141315 -2677726  13582    30    31    6701      41 191  0  0  -3223     10     46     51     .007   .000   .000
52610.50    -530  141497 -2690345  11487    27    29    6734      35 191  0  0  -3118    354     37     40    -.012   .000   .000
52611.50   -3564  142011 -2700608   8972    28    28    6767      34 191  0  0  -2949    674     37     38     .000   .000   .000
52612.50   -6726  142845 -2708088   6047    28    29    6800      35 191  0  0  -3375    994     37     38    -.001   .000   .000
52613.50  -10368  143868 -2712926   3809    28    29    6833      34 191  0  0  -3910   1050     37     39    -.003   .000   .000
52614.50  -14460  145037 -2716366   3292    28    29    6865      36 191  0  0  -4273   1287     39     41     .006   .000   .000
52615.50  -18774  146369 -2719957   4056    30    31    6898      43 191  0  0  -4356   1378     50     52     .014   .000   .000