Subject: [IGSREPORT-4769] Wk 0949 MIT T2 Analysis Report
From: Thomas Herring
Date: Mon, 6 Apr 1998 19:05:33 PDT

******************************************************************************
IGS Electronic Report    Mon Apr  6 19:05:33 PDT 1998      Message Number 4769
******************************************************************************

Author: Thomas Herring
Subject: Wk 0949 MIT T2 Analysis Report

********************************************************************************
MIT ANALYSIS REPORT GPS-WEEK 0949    Dates: 98mar15  to  98mar21 
********************************************************************************

MIT (Massachusetts Institute of Technology) 
Room 54-618
77 Massachusetts Avenue, 
Cambridge,  MA  02139
e-mail: [email-masked] 
tel:    (617)253-5941 (Tom Herring)
fax:    (617)253-1699

PRODUCTS GENERATED:
The following products are generated and uploaded into CDDIS @ NASA/GSFC
   MIT0949g.SNX   Combined sinex file from all available analysis centers
   MIT0949g.SUM   Name of this summary file
   MIT0949g.RES   File of the individual AC position estimates residuals 
                  to the combined solution for the week. 

0.0 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

0.1 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. 

0.2 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 before
 combination.  Due to numerical stability different new constraints
 are applied to different centers (see center report below):
 
(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.
 Starting Week 0943: 47 Reference sites are used:
           Sig N    Sig E    Sig U
            (m)      (m)      (m)
  VILL    0.0027   0.0022   0.0032  
  MAS1    0.0031   0.0028   0.0031  
  FORT    0.0029   0.0031   0.0040  
  BRAZ    0.0031   0.0037   0.0068  
  KOUR    0.0028   0.0036   0.0070  
  OHIG    0.0042   0.0048   0.0053  
  BRMU    0.0023   0.0021   0.0032  
  THU1    0.0022   0.0023   0.0038  
  SANT    0.0031   0.0036   0.0042  
  AREQ    0.0041   0.0045   0.0052  
  WES2    0.0021   0.0019   0.0031  
  GODE    0.0020   0.0019   0.0028  
  ALGO    0.0020   0.0019   0.0028  
  NLIB    0.0021   0.0020   0.0039  
  MDO1    0.0021   0.0021   0.0036  
  PIE1    0.0021   0.0021   0.0037  
  YELL    0.0021   0.0021   0.0030  
  GOL2    0.0021   0.0021   0.0031  
  DRAO    0.0021   0.0021   0.0034  
  FAIR    0.0024   0.0022   0.0028  
  KOKB    0.0028   0.0027   0.0033  
  KWJ1    0.0034   0.0035   0.0042  
  MAC1    0.0040   0.0038   0.0044  
  TID2    0.0037   0.0033   0.0039  
  HOB2    0.0038   0.0034   0.0050  
  GUAM    0.0034   0.0036   0.0038  
  TSKB    0.0031   0.0032   0.0041  
  SHAO    0.0031   0.0033   0.0043  
  PERT    0.0037   0.0032   0.0042  
  YAR1    0.0036   0.0030   0.0029  
  IRKT    0.0029   0.0036   0.0037  
  LHAS    0.0031   0.0036   0.0041  
  DAV1    0.0039   0.0040   0.0050  
  KERG    0.0037   0.0038   0.0044  
  KIT3    0.0029   0.0033   0.0037  
  MALI    0.0034   0.0040   0.0046  
  ZWEN    0.0027   0.0027   0.0038  
  HART    0.0035   0.0039   0.0043  
  TROM    0.0025   0.0023   0.0028  
  MATE    0.0027   0.0024   0.0029  
  GRAZ    0.0027   0.0023   0.0022  
  POTS    0.0026   0.0022   0.0025  
  WTZR    0.0026   0.0022   0.0023  
  ONSA    0.0026   0.0022   0.0025  
  NYAL    0.0025   0.0022   0.0037  
  KOSG    0.0026   0.0022   0.0023  

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) Individual Center comments:  As a reminder we include here the
    position changes being applied to different centers because their
    ARP heights do not match the current station logs (or the values
    used by the majority of centers.  These were reported in 
    0.0 IMPORTANT NOTE Previously.)
NOTE: Starting Wk0895 we adopted the station log height for
      IISC  0.0780 m (Previous value was 0.0000)
      MDVO  0.1456 m (Previous value was 0.1493)
EMR: (a) Constraints loosened to +-5 m for positions
     (b) TAHI fixed 97/6/1 Wk0908   
JPL: (a) Constraints not changed.  No constraints given SINEX file but
     they are 10 meter for the core sites, and 1 km for others
     (b) From Wk922 JPL has the following differences:
     MOIN  N   0.0000, E 0.0000,  U -.1016, IGS 0.0 0.0 0.0857
     MDVO  N  -0.0048, E 0.0056,  U 0.1317, IGS 0.0 0.0 0.1456
     TAEJ  N  -0.0055, E 0.0057,  U 0.6387, IGS 0.0 0.0 0.6604 
     KOUR  N   0.0000, E 0.0000,  U 0.1320, IGS 0.0 0.0 0.0450
Removed MALI correction WK947 since JPL assumes DM-B antenna rather
than correct DM-T antenna.  Height below is nearly consistent with
ARP difference for these antennas.
     MALI  N   0.0000, E 0.0000,  U 0.1663, IGS 0.0 0.0 0.1347
     In addition, the following sites have different heights in the
     jpl 7 and g series sinex files: CASA, GALA, HART, HARK, LPGS,
     NICO, TOUL.
GFZ: (a) Constraints loosened to +-5 m for positions.
     (b) GFZ uses U 0.073 for YAR2; we move to U 0.0814 YAR1
COD: (a) Constraints loosened to +-5 m for positions.
SIO: (a) Constraints not changed since the center's constraints +-10 m
     (b) Height corrections
      THU1 -0.035 m (SIO -.0350, IGS 0.000 m
      MALI -0.035 m (SIO 0.0997; IGS 0.1347)
Added Week 947:
      FLIN -0.135 m (SIO 0.0150; IGS 0.1500)
NGS: (a) Constraints loosened to +-5 m for positions.
     (b) NGS sporatically uses 0.000 for the height of YAR1 instead
         of the correct height 0.0730 (Recently Weeks 914,917,918 and 923)
ESA: (a) Constraints not changed since the center's constraints are
     very loose (1000m)
     (b) Remove TAEJ until large height error is understood (Wk 932)
     
(5) When the combined and center solutions are compared to ITRF96, the
heights are given a variance 10 times larger than the horizontal coordinates.
The same variance ratio is used when the RMS to ITRF96 core sites is
computed.

(6) 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.

(7) 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 ITRF96, 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 ITRF96.
The result of this is that the combined solution has the same center
of mass position and scale as ITRF96, and therefore when each of the
centers are compared to the combined solution, they generate very similar
translations and scales as they do the ITRF96.  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.

(8) 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 ITRF 1996
 Transformation of loose solution COMBINED to ITRF96
 -----------------------------------------------
 For   44 Sites, RMS after 7 parameter transformation   4.0 mm  COMBINED wrt ITRF96 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
   -8.5    1.8     -0.4    1.9    -28.0    2.7  -0.696  0.100  COMBINED  CoM
 
 Adjustments to core site positions for COMBINED
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 MAS1    -3.5    0.8    8.2    1.7  -10.1    3.7  COMBINED wrt ITRF96
 FORT     1.9    1.1   -5.6    2.5   -1.3    4.6  COMBINED wrt ITRF96
 KOUR     3.0    1.1   -2.1    2.7   26.3    5.9  COMBINED wrt ITRF96
 OHIG    -1.3    1.8    1.8    1.9   10.5    3.5  COMBINED wrt ITRF96
 BRMU     0.0    0.8    2.5    1.6   -0.6    3.5  COMBINED wrt ITRF96
 SANT     0.0    1.6    0.9    2.0  -14.7    4.5  COMBINED wrt ITRF96
 AREQ     1.1    1.2   -6.0    2.6   -8.4    4.4  COMBINED wrt ITRF96
 WES2     8.1    0.8   -5.2    1.7    4.6    3.0  COMBINED wrt ITRF96
 GODE    -2.9    0.8    9.7    1.5   18.2    3.5  COMBINED wrt ITRF96
 ALGO     0.0    0.6    3.1    0.9   -0.4    1.9  COMBINED wrt ITRF96
 NLIB     1.1    0.8    1.5    1.8    3.6    3.5  COMBINED wrt ITRF96
 MDO1     4.1    0.8   -2.9    1.8  -15.6    3.7  COMBINED wrt ITRF96
 PIE1     4.1    1.0   -3.5    2.1   -3.0    4.0  COMBINED wrt ITRF96
 YELL     3.8    0.9    6.6    1.0   -2.7    2.3  COMBINED wrt ITRF96
 GOLD    -1.1    1.0   -1.9    2.2  -18.6    4.3  COMBINED wrt ITRF96
 GOL2     3.1    0.9    3.0    1.2    2.6    3.6  COMBINED wrt ITRF96
 DRAO    -0.5    0.7    1.1    1.3   -6.6    2.3  COMBINED wrt ITRF96
 FAIR     2.0    0.9    0.3    1.0  -15.2    2.6  COMBINED wrt ITRF96
 KOKB    -0.7    0.8   -1.9    1.4   14.5    2.9  COMBINED wrt ITRF96
 KWJ1    -9.0    0.9    8.4    1.6  -10.8    3.4  COMBINED wrt ITRF96
 MAC1    -0.2    1.1   -9.4    1.3   -3.3    2.9  COMBINED wrt ITRF96
 TIDB    -4.5    1.0   -0.1    2.1    7.3    3.5  COMBINED wrt ITRF96
 TID2    -0.7    1.0    1.4    1.3    9.3    3.8  COMBINED wrt ITRF96
 HOB2    -7.1    1.0   -0.7    2.0   18.8    3.2  COMBINED wrt ITRF96
 GUAM    -8.8    0.9    1.0    1.5   -7.0    4.0  COMBINED wrt ITRF96
 TSKB     2.5    0.9   -4.5    1.2   21.2    3.1  COMBINED wrt ITRF96
 SHAO    -0.8    1.1    0.0    2.1   -9.5    4.4  COMBINED wrt ITRF96
 PERT     3.7    0.8    1.9    1.4    8.3    3.5  COMBINED wrt ITRF96
 YAR1    -2.3    0.8    2.8    1.2    6.5    3.0  COMBINED wrt ITRF96
 IRKT     0.9    1.0    2.9    1.1    1.7    2.6  COMBINED wrt ITRF96
 LHAS    -0.1    0.8    9.8    1.2    2.0    2.7  COMBINED wrt ITRF96
 DAV1     7.7    1.6    7.9    2.2    6.8    3.8  COMBINED wrt ITRF96
 KERG     0.7    1.2   10.9    2.1    2.7    3.1  COMBINED wrt ITRF96
 KIT3     5.7    0.8   -1.4    1.1  -16.1    2.5  COMBINED wrt ITRF96
 MALI     8.2    1.2  -14.6    3.0  -30.3    5.0  COMBINED wrt ITRF96
 ZWEN    -0.3    0.9    1.5    1.6  -11.7    2.6  COMBINED wrt ITRF96
 TROM    -6.2    0.9    7.1    1.5    4.3    2.9  COMBINED wrt ITRF96
 MATE    -2.0    0.8   -2.1    1.4    0.6    3.1  COMBINED wrt ITRF96
 GRAZ     2.0    1.7   -9.4    3.9  -10.2    6.0  COMBINED wrt ITRF96
 POTS     1.7    0.7   -8.6    1.4  -17.4    2.7  COMBINED wrt ITRF96
 WTZR     1.6    0.6   -1.9    0.9    1.2    2.2  COMBINED wrt ITRF96
 ONSA     0.0    0.7    5.4    0.9    8.7    1.9  COMBINED wrt ITRF96
 NYAL    -5.1    1.0   -1.7    1.2   30.1    3.3  COMBINED wrt ITRF96
 KOSG    -1.8    0.8   -4.7    1.4    4.0    2.4  COMBINED wrt ITRF96
 Reference sites NOT used 
 MADR     3.8    0.8   -4.3    1.7  -26.5    3.2  COMBINED wrt ITRF96

 3.0 CENTER FITS TO ITRF 1996
 CENTER EMR
 -------------------
 VARIANCE RESCALING FACTOR FOR EMR 31
 
 Transformation of loose solution EMR to ITRF96
 -----------------------------------------------
 For   24 Sites, RMS after 7 parameter transformation  12.7 mm  EMR wrt ITRF96 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
   -3.5   19.7     98.1   25.0   -184.3   68.3  -2.508  0.798  EMR  CoM
 
 Adjustments to core site positions for EMR
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 MAS1    12.1    4.8   10.8    9.6   31.9   17.8  EMR wrt ITRF96
 FORT    17.4    6.8  -43.6   18.8   -6.5   35.7  EMR wrt ITRF96
 SANT    10.4   10.2  -33.0   16.5   25.9   28.3  EMR wrt ITRF96
 AREQ     3.8    7.2  -42.1   13.6   53.0   25.2  EMR wrt ITRF96
 ALGO     4.7    4.3   17.2    7.6   -2.5   12.4  EMR wrt ITRF96
 YELL    11.4    4.9   20.8    6.9  -13.0   14.0  EMR wrt ITRF96
 GOLD    -0.9    5.0   23.9    9.3  -38.5   17.9  EMR wrt ITRF96
 DRAO     3.7    4.4   21.1    6.7  -18.1   12.4  EMR wrt ITRF96
 FAIR     8.5    4.8    4.0    6.9  -22.5   14.2  EMR wrt ITRF96
 KOKB   -23.9    6.5   15.2   11.9  -28.4   22.9  EMR wrt ITRF96
 TIDB   -28.3    7.2   -5.4   13.3    5.4   21.5  EMR wrt ITRF96
 GUAM   -24.7    6.6    2.8   25.9  -16.9   27.3  EMR wrt ITRF96
 TSKB    -4.0    5.2   -1.5    9.8   -3.5   17.4  EMR wrt ITRF96
 YAR1   -10.0    5.3   -0.3   16.1   22.4   20.0  EMR wrt ITRF96
 IRKT     0.2    5.4   -3.8    9.2  -15.6   15.4  EMR wrt ITRF96
 LHAS    -5.0    5.0   13.5   10.2    5.6   17.7  EMR wrt ITRF96
 DAV1    40.4    8.8    5.0   13.3   26.0   25.4  EMR wrt ITRF96
 KERG    29.1    6.9   37.6   13.2   24.5   19.6  EMR wrt ITRF96
 KIT3     4.3    5.3   -0.8   14.3  -12.0   20.3  EMR wrt ITRF96
 MALI    23.6    6.7  -14.0   32.2  -27.7   28.7  EMR wrt ITRF96
 WTZR     1.9    4.4    2.4    7.7    4.9   13.8  EMR wrt ITRF96
 ONSA    -4.9    7.4   18.2   13.7    4.0   31.4  EMR wrt ITRF96
 NYAL   -12.7    5.1    0.3    6.6    5.8   19.1  EMR wrt ITRF96
 KOSG    -2.3    4.7    2.8    8.1   -4.5   15.7  EMR wrt ITRF96
 Reference sites NOT used 
 
 CENTER JPL
 -------------------
 VARIANCE RESCALING FACTOR FOR JPL 6.71
 
 Transformation of loose solution JPL to ITRF96
 -----------------------------------------------
 For   31 Sites, RMS after 7 parameter transformation   5.2 mm  JPL wrt ITRF96 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
    0.4    6.4     -3.0    6.9      1.1    7.2   0.781  0.252  JPL  CoM
 
 Adjustments to core site positions for JPL
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 MAS1     2.6    3.5    2.3    4.2   -7.7   14.6  JPL wrt ITRF96
 FORT     1.9    2.2   -4.6    3.5    1.9    8.5  JPL wrt ITRF96
 KOUR     4.1    4.3   -9.3    4.9  103.4   21.6  JPL wrt ITRF96
 OHIG     2.1    2.8    4.9    2.3    7.9    6.8  JPL wrt ITRF96
 BRMU    -0.5    2.9    2.2    2.8  -12.8   12.0  JPL wrt ITRF96
 SANT     1.8    2.4    2.9    2.3  -16.0    7.3  JPL wrt ITRF96
 AREQ     5.9    3.6   -1.6    4.2   19.3   16.6  JPL wrt ITRF96
 GODE    -4.7    2.3    9.1    2.1   16.7    7.9  JPL wrt ITRF96
 ALGO    -1.5    1.5    1.9    1.3  -14.4    4.4  JPL wrt ITRF96
 YELL     3.7    1.5    4.5    1.4  -15.4    4.8  JPL wrt ITRF96
 GOL2     2.3    1.3    1.0    1.6  -10.2    4.7  JPL wrt ITRF96
 FAIR     0.1    1.6    0.0    1.4  -19.2    4.8  JPL wrt ITRF96
 KOKB    -4.3    1.5   -3.3    1.9    9.7    5.8  JPL wrt ITRF96
 KWJ1    -6.9    1.5    3.6    1.9   -3.6    6.4  JPL wrt ITRF96
 MAC1     7.7    2.1  -11.5    1.8   -9.2    6.0  JPL wrt ITRF96
 TID2     5.6    1.4    0.3    1.6    7.3    4.8  JPL wrt ITRF96
 GUAM    -4.5    1.4    1.2    1.8   -6.2    6.1  JPL wrt ITRF96
 TSKB     0.2    1.3   -5.1    1.3   16.3    4.6  JPL wrt ITRF96
 SHAO    -6.1    3.0    2.0    3.4   -5.2   12.5  JPL wrt ITRF96
 PERT     2.4    1.6    0.4    1.7   -1.8    6.0  JPL wrt ITRF96
 YAR1    -0.8    1.3    1.0    1.5   -6.1    4.9  JPL wrt ITRF96
 IRKT    -3.0    1.6    2.3    1.3   -5.7    4.6  JPL wrt ITRF96
 LHAS    -5.9    1.4    8.7    1.5   -2.5    5.0  JPL wrt ITRF96
 DAV1     7.0    2.5    8.6    3.2    8.3    7.5  JPL wrt ITRF96
 KERG     0.0    2.4    8.0    3.5   -3.0    7.5  JPL wrt ITRF96
 KIT3     1.4    1.5   -1.0    1.6  -29.8    5.3  JPL wrt ITRF96
 MALI     7.0    2.3  -14.7    4.3  -29.1   10.7  JPL wrt ITRF96
 MATE    -0.6    3.1   -1.5    2.7   -5.2   10.7  JPL wrt ITRF96
 WTZR     0.3    1.5   -0.1    1.5   -2.9    4.5  JPL wrt ITRF96
 ONSA    -1.8    1.7    1.3    1.5    5.7    5.0  JPL wrt ITRF96
 NYAL    -4.5    1.9    0.5    1.9    9.3    7.0  JPL wrt ITRF96
 Reference sites NOT used 
 
 CENTER GFZ
 -------------------
 VARIANCE RESCALING FACTOR FOR GFZ 167.5
 
 Transformation of loose solution GFZ to ITRF96
 -----------------------------------------------
 For   37 Sites, RMS after 7 parameter transformation   6.6 mm  GFZ wrt ITRF96 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
   -2.1    8.3     52.5    8.1    -51.8   25.8  -0.916  0.361  GFZ  CoM
 
 Adjustments to core site positions for GFZ
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 MAS1    -6.4    2.1    1.3    4.4   -7.1   11.0  GFZ wrt ITRF96
 FORT    -5.0    2.8  -15.3    7.8   25.3   14.3  GFZ wrt ITRF96
 KOUR    -1.0    2.8    2.1    8.5   27.4   22.4  GFZ wrt ITRF96
 OHIG    -8.2    4.3   -1.5    5.9   20.4   11.3  GFZ wrt ITRF96
 BRMU     3.5    1.8   11.6    3.9   -0.6    8.0  GFZ wrt ITRF96
 SANT    -2.5    3.8    0.8    7.9    1.1   14.6  GFZ wrt ITRF96
 AREQ    -2.2    2.5    4.4    5.6    3.9   11.1  GFZ wrt ITRF96
 WES2    14.6    1.8    2.7    3.6   -4.5    7.3  GFZ wrt ITRF96
 ALGO     8.4    1.8    9.6    3.6  -10.9    7.3  GFZ wrt ITRF96
 NLIB    10.7    1.8    2.6    3.5    2.9    7.2  GFZ wrt ITRF96
 MDO1    13.7    1.9   -4.6    3.7  -14.8    8.1  GFZ wrt ITRF96
 YELL    11.7    2.3    2.9    3.5  -12.2    8.3  GFZ wrt ITRF96
 GOL2    10.2    2.1   -3.5    4.0   -0.8    8.1  GFZ wrt ITRF96
 DRAO     7.7    2.0   -4.8    3.4   -9.0    7.0  GFZ wrt ITRF96
 FAIR     4.1    2.3  -11.7    3.7  -17.2    8.2  GFZ wrt ITRF96
 KOKB    -3.3    2.4   -9.4    5.2   28.7   10.1  GFZ wrt ITRF96
 KWJ1   -14.6    2.7   27.0    5.9    4.5   12.7  GFZ wrt ITRF96
 MAC1    -2.6    3.3  -13.9    5.0    1.1    9.8  GFZ wrt ITRF96
 TID2    -8.3    2.7   -5.4    4.8    9.6    9.3  GFZ wrt ITRF96
 HOB2    -9.5    2.8   -8.1    4.7   11.7    9.4  GFZ wrt ITRF96
 GUAM   -10.4    2.8    8.8    6.2   -8.3   12.8  GFZ wrt ITRF96
 TSKB     0.0    2.4    8.0    4.2   23.5    8.3  GFZ wrt ITRF96
 YAR1    -6.4    2.5   -2.2    5.6    7.0   11.3  GFZ wrt ITRF96
 IRKT     8.5    2.5   11.2    4.3   -5.1    8.1  GFZ wrt ITRF96
 LHAS     5.9    2.5   15.0    4.7    2.3    9.6  GFZ wrt ITRF96
 DAV1     7.3   11.3    8.2   16.1    7.1   43.3  GFZ wrt ITRF96
 KERG     3.3    3.3   23.6    5.5   12.7    9.2  GFZ wrt ITRF96
 KIT3    12.6    2.4   -5.8    4.7  -23.2    9.3  GFZ wrt ITRF96
 MALI    10.4    3.0  -21.9    8.3  -39.4   14.3  GFZ wrt ITRF96
 ZWEN     3.3    1.9   -4.8    3.3  -11.2    7.0  GFZ wrt ITRF96
 TROM    -7.1    2.2    0.5    3.4   -0.8    8.8  GFZ wrt ITRF96
 MATE    -3.3    1.8  -10.8    3.5   -5.6    7.3  GFZ wrt ITRF96
 POTS    -1.3    2.0   -6.8    3.7  -21.3    7.6  GFZ wrt ITRF96
 WTZR    -1.7    1.9   -5.8    3.4   -5.5    7.4  GFZ wrt ITRF96
 ONSA    -0.7    2.0   -2.7    3.3    4.7    7.8  GFZ wrt ITRF96
 NYAL    -6.6    2.3   -4.8    3.1   18.9   10.3  GFZ wrt ITRF96
 KOSG    -4.0    2.0   -3.7    3.5  -15.2    8.2  GFZ wrt ITRF96
 Reference sites NOT used 
 
 CENTER COD
 -------------------
 VARIANCE RESCALING FACTOR FOR COD 28.26
 
 Transformation of loose solution COD to ITRF96
 -----------------------------------------------
 For   40 Sites, RMS after 7 parameter transformation   3.9 mm  COD wrt ITRF96 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
  -11.6    2.6     -3.1    2.7    -33.1    3.5  -1.895  0.208  COD  CoM
 
 Adjustments to core site positions for COD
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 MAS1    -3.0    7.3   13.7    9.5   -0.5    7.0  COD wrt ITRF96
 FORT     1.1    8.4   -3.4    8.1  -11.8    9.4  COD wrt ITRF96
 KOUR     0.9    8.3   -2.9    8.0   25.4    9.2  COD wrt ITRF96
 OHIG     6.8    7.9   -6.9    9.0   17.6    6.7  COD wrt ITRF96
 BRMU    -0.4    7.0    1.7    8.8    1.0    7.3  COD wrt ITRF96
 SANT     2.6    6.9   -5.8    9.4  -19.0    8.3  COD wrt ITRF96
 AREQ     0.3    7.8   -3.4    9.8   -7.2    6.8  COD wrt ITRF96
 WES2     8.5    6.4   -6.7    9.0    6.2    6.9  COD wrt ITRF96
 GODE    -2.7    6.4    7.7    9.4   20.5    6.7  COD wrt ITRF96
 ALGO    -1.0    6.3    1.4    9.3    4.0    6.6  COD wrt ITRF96
 NLIB     0.0    6.3   -0.1    9.6    8.2    6.6  COD wrt ITRF96
 MDO1     1.9    7.0   -0.6    9.6   -4.9    6.7  COD wrt ITRF96
 PIE1     1.9    7.0   -0.3    9.2   11.5    7.2  COD wrt ITRF96
 YELL     0.7    7.5    6.3    8.7    1.6    5.8  COD wrt ITRF96
 GOLD    -2.1    7.3   -4.4    8.6   -6.3    7.7  COD wrt ITRF96
 DRAO    -3.7    7.1    1.5    8.5    4.2    7.2  COD wrt ITRF96
 FAIR    -0.4    7.9    1.2    8.8  -16.8    5.7  COD wrt ITRF96
 KOKB    -4.2    7.9   -1.3    9.7   14.3    7.0  COD wrt ITRF96
 KWJ1    -6.5    8.4   14.0   10.4  -13.6    5.8  COD wrt ITRF96
 MAC1     1.8    6.8  -10.2    8.4   11.2    6.9  COD wrt ITRF96
 TIDB    -4.0    7.0    0.0    8.2    8.1    7.8  COD wrt ITRF96
 HOB2    -5.6    6.8   -2.7    8.1    8.3    7.6  COD wrt ITRF96
 GUAM    -4.1    8.2   -3.5    8.5  -14.1    9.0  COD wrt ITRF96
 TSKB     4.8    7.4   -5.3    8.4    9.0    8.6  COD wrt ITRF96
 SHAO     1.9    7.4   -1.7    8.7   -8.5    8.2  COD wrt ITRF96
 PERT    -0.1    6.9    2.4    8.6    0.6    7.5  COD wrt ITRF96
 YAR1    -5.1    7.1    2.8    8.7    4.1    7.4  COD wrt ITRF96
 IRKT     1.8    6.7    0.0    9.6   -2.8    6.7  COD wrt ITRF96
 LHAS    -0.2    6.9    1.9   10.5   -2.4    6.3  COD wrt ITRF96
 DAV1     9.5    7.6    8.1    8.6    9.0    6.2  COD wrt ITRF96
 KERG     6.9    6.8    8.6    8.8   -3.3    7.3  COD wrt ITRF96
 KIT3     4.7    6.9   -2.9    9.3  -20.0    7.6  COD wrt ITRF96
 MALI    12.4    8.8  -13.6    8.3  -26.5    9.1  COD wrt ITRF96
 ZWEN    -1.8    7.5    4.3    8.2   -8.0    6.9  COD wrt ITRF96
 MATE    -2.9    6.8    0.6    9.0    3.5    7.4  COD wrt ITRF96
 GRAZ    -1.9    6.7    0.4    8.9   -4.3    7.1  COD wrt ITRF96
 POTS    -1.2    6.8    1.2    8.8   -8.8    6.9  COD wrt ITRF96
 WTZR    -0.8    6.7    1.6    8.9    3.1    7.0  COD wrt ITRF96
 ONSA    -0.7    7.1    2.8    8.7    6.6    6.4  COD wrt ITRF96
 KOSG    -2.8    6.6    1.5    9.0    0.9    6.7  COD wrt ITRF96
 Reference sites NOT used 
 
 CENTER SIO
 -------------------
 VARIANCE RESCALING FACTOR FOR SIO 2.384
 
 Transformation of loose solution SIO to ITRF96
 -----------------------------------------------
 For   42 Sites, RMS after 7 parameter transformation   7.4 mm  SIO wrt ITRF96 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
   -6.9    5.8    -14.5    5.9   -143.8   19.3  -1.086  0.431  SIO  CoM
 
 Adjustments to core site positions for SIO
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 MAS1    -0.2    1.9   11.1    2.8  -14.1    7.3  SIO wrt ITRF96
 FORT     4.4    2.8   -0.6    5.7   -2.5    9.1  SIO wrt ITRF96
 KOUR     2.1    2.5    7.3    4.7   23.6   10.7  SIO wrt ITRF96
 OHIG    -7.6    4.0   -1.9    5.3    9.5    9.1  SIO wrt ITRF96
 BRMU    -0.3    1.4    6.8    3.0    2.8    6.6  SIO wrt ITRF96
 SANT    -2.0    5.7  -14.5   12.7  -24.0   18.7  SIO wrt ITRF96
 AREQ     1.6    2.7  -24.8    6.1  -11.5   13.1  SIO wrt ITRF96
 WES2     7.9    1.3    0.1    2.6    9.9    4.9  SIO wrt ITRF96
 GODE    -3.7    1.4   14.2    3.0    9.0    7.1  SIO wrt ITRF96
 ALGO     0.0    1.2    8.2    2.1    1.0    3.9  SIO wrt ITRF96
 NLIB     0.6    1.5    8.3    2.8   -0.8    6.5  SIO wrt ITRF96
 MDO1     1.8    1.7    2.1    3.0  -32.4    7.5  SIO wrt ITRF96
 PIE1     3.7    1.6    1.8    2.9  -16.2    6.3  SIO wrt ITRF96
 YELL     7.0    1.8   16.1    2.5    0.5    4.9  SIO wrt ITRF96
 GOLD    -1.0    1.8    2.7    3.2  -30.6    7.8  SIO wrt ITRF96
 DRAO     2.6    1.4    4.9    2.1  -13.0    4.2  SIO wrt ITRF96
 FAIR    10.0    1.9   -2.4    2.9  -22.7    7.0  SIO wrt ITRF96
 KOKB    -1.2    2.5   -9.4    3.3    3.8    6.0  SIO wrt ITRF96
 KWJ1   -17.5    2.6    3.7    4.2  -23.7    9.6  SIO wrt ITRF96
 MAC1    -5.0    2.4   -2.5    3.6   13.5    5.8  SIO wrt ITRF96
 TIDB    -9.9    1.8    5.4    3.1   29.6    5.8  SIO wrt ITRF96
 HOB2   -11.8    2.0    4.6    3.3   47.8    5.5  SIO wrt ITRF96
 GUAM   -21.2    2.4  -14.1    4.3  -11.4   13.1  SIO wrt ITRF96
 TSKB     2.7    2.8  -23.0    6.6  -84.4   84.0  SIO wrt ITRF96
 SHAO    -1.9    2.1   -6.3    3.4   -9.9    8.3  SIO wrt ITRF96
 PERT     6.5    1.6   11.4    3.4   36.7    7.8  SIO wrt ITRF96
 YAR1    -0.1    1.6   15.0    3.4   34.4    8.2  SIO wrt ITRF96
 IRKT     1.4    2.1    8.0    3.3   11.9    6.4  SIO wrt ITRF96
 LHAS     5.4    2.0   14.1    3.2    2.2    5.9  SIO wrt ITRF96
 DAV1     7.6    3.0    6.3    4.6   17.2   11.2  SIO wrt ITRF96
 KERG     0.2    2.5    9.9    4.2   14.2    5.7  SIO wrt ITRF96
 KIT3    13.7    1.7   -0.6    2.4   -8.0    4.7  SIO wrt ITRF96
 MALI    14.1    3.3   -8.7    7.4  -38.3   12.2  SIO wrt ITRF96
 ZWEN     4.6    1.4   -0.1    2.4   -3.6    4.6  SIO wrt ITRF96
 TROM    -3.8    1.5    5.3    2.1   11.3    4.4  SIO wrt ITRF96
 MATE     5.4    1.6   -4.6    2.5    8.5    5.5  SIO wrt ITRF96
 GRAZ     8.9    2.1  -15.9    4.9  -12.5   41.3  SIO wrt ITRF96
 POTS     7.8    1.3  -13.5    2.1  -11.0    4.7  SIO wrt ITRF96
 WTZR     8.1    1.3   -9.6    2.0    6.9    4.6  SIO wrt ITRF96
 ONSA     4.2    1.3   12.0    1.9   16.2    3.9  SIO wrt ITRF96
 NYAL    -6.5    1.9   -4.5    2.3   43.6    5.2  SIO wrt ITRF96
 KOSG     3.1    1.4   -9.0    2.1   16.7    4.2  SIO wrt ITRF96
 Reference sites NOT used 
 MADR     9.0    1.5   -6.4    2.3  -20.3    4.6  SIO wrt ITRF96
 
 CENTER NGS
 -------------------
 VARIANCE RESCALING FACTOR FOR NGS 322.5
 
 Transformation of loose solution NGS to ITRF96
 -----------------------------------------------
 For   42 Sites, RMS after 7 parameter transformation  13.8 mm  NGS wrt ITRF96 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
    4.5   20.7    232.2   19.3    -82.5   74.4  -2.055  1.280  NGS  CoM
 
 Adjustments to core site positions for NGS
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 MAS1    -6.9   15.3    7.5   19.1   11.4   18.0  NGS wrt ITRF96
 FORT     0.5   20.7  -15.5   31.8    3.0   38.1  NGS wrt ITRF96
 KOUR     0.8   18.5   -9.5   25.8   42.1   34.4  NGS wrt ITRF96
 OHIG    29.4   43.1   28.8   49.4   25.1   41.3  NGS wrt ITRF96
 BRMU    -1.5   14.1    3.2   17.0    3.2   15.7  NGS wrt ITRF96
 SANT    33.8   35.8    2.8   41.5   20.8   40.0  NGS wrt ITRF96
 AREQ    34.6   33.9   19.2   36.5   31.5   40.0  NGS wrt ITRF96
 WES2    12.2   13.1   -7.8   17.3    3.7   14.9  NGS wrt ITRF96
 GODE    -1.7   13.2    2.9   17.7   23.5   15.1  NGS wrt ITRF96
 ALGO     3.6   13.0   -4.0   17.6    0.3   14.9  NGS wrt ITRF96
 NLIB    -2.9   13.1  -14.1   18.1    9.5   15.9  NGS wrt ITRF96
 MDO1   -12.0   14.7  -15.2   18.6   -5.0   18.2  NGS wrt ITRF96
 PIE1   -13.0   14.6  -18.1   18.3    9.8   18.5  NGS wrt ITRF96
 YELL   -13.9   17.0  -35.0   19.5   -1.8   15.8  NGS wrt ITRF96
 GOLD   -23.8   15.1  -20.7   18.2   -1.7   19.6  NGS wrt ITRF96
 DRAO   -25.6   15.3  -29.3   18.5    5.9   17.8  NGS wrt ITRF96
 FAIR   -45.9   18.4  -30.0   21.6   -5.2   18.7  NGS wrt ITRF96
 KOKB   -46.6   18.9   16.2   24.9   36.8   27.0  NGS wrt ITRF96
 KWJ1    12.9   20.9   59.9   27.0  -62.1   29.5  NGS wrt ITRF96
 MAC1     2.5   19.6  -13.3   23.5  -22.3   25.0  NGS wrt ITRF96
 TIDB    12.4   16.6    1.7   21.1  -14.1   28.0  NGS wrt ITRF96
 HOB2     7.0   16.8   -3.9   20.9  -20.4   26.4  NGS wrt ITRF96
 GUAM     4.2   18.7   26.0   20.8  -64.7   26.9  NGS wrt ITRF96
 TSKB    30.1   16.8   -4.9   19.5   -5.9   21.7  NGS wrt ITRF96
 SHAO    16.3   15.9  -11.4   19.3  -32.3   20.8  NGS wrt ITRF96
 PERT    15.9   15.2    8.1   19.5    4.0   24.8  NGS wrt ITRF96
 YAR1    11.3   15.6    9.1   19.7    2.3   25.1  NGS wrt ITRF96
 IRKT    11.9   15.5  -30.1   20.8  -11.9   17.1  NGS wrt ITRF96
 LHAS     4.6   14.8   -8.7   21.0  -12.7   17.4  NGS wrt ITRF96
 DAV1    25.1   21.4   21.2   25.9   -8.8   19.4  NGS wrt ITRF96
 KERG    15.9   18.1   21.9   23.0   -2.1   20.8  NGS wrt ITRF96
 KIT3     1.3   14.2  -17.1   19.1  -16.0   18.0  NGS wrt ITRF96
 MALI     4.1   19.9  -28.7   22.4  -32.7   24.9  NGS wrt ITRF96
 ZWEN   -18.8   14.5   -2.0   16.8   -0.1   16.2  NGS wrt ITRF96
 TROM   -28.3   15.9   26.2   17.4   10.4   14.3  NGS wrt ITRF96
 MATE   -16.4   13.9   -1.0   17.7   18.2   18.6  NGS wrt ITRF96
 GRAZ   -16.3   13.4    3.6   17.2    3.8   16.8  NGS wrt ITRF96
 POTS   -16.9   13.4    9.6   17.0   -2.2   16.0  NGS wrt ITRF96
 WTZR   -15.7   13.4    7.2   17.5   10.8   17.7  NGS wrt ITRF96
 ONSA   -17.5   14.0   17.3   17.4   18.0   17.1  NGS wrt ITRF96
 NYAL   -22.8   17.4   31.0   18.0   22.2   15.3  NGS wrt ITRF96
 KOSG   -17.6   13.2   17.7   17.5    4.4   16.5  NGS wrt ITRF96
 Reference sites NOT used 
 MADR    -5.7   13.8    7.6   19.0   -4.8   17.1  NGS wrt ITRF96
 
 CENTER ESA
 -------------------
 VARIANCE RESCALING FACTOR FOR ESA 28.272
 
 Transformation of loose solution ESA to ITRF96
 -----------------------------------------------
 For   36 Sites, RMS after 7 parameter transformation   7.6 mm  ESA wrt ITRF96 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
    0.2   13.0    -12.7   13.3    -85.3   79.8  -1.831  0.851  ESA  CoM
 
 Adjustments to core site positions for ESA
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 MAS1    -2.1    5.2  -11.5   13.5   -0.7   17.1  ESA wrt ITRF96
 FORT    -1.5    6.3  -16.6   22.8  -38.5   25.0  ESA wrt ITRF96
 KOUR    -0.2    5.7    0.9   26.2   30.0   25.3  ESA wrt ITRF96
 OHIG    11.5   11.4  -10.5   12.7   30.9   20.1  ESA wrt ITRF96
 BRMU     3.8    4.4   18.8   12.7   12.3   14.7  ESA wrt ITRF96
 SANT     4.9    9.5    7.3   23.6   -4.5   30.0  ESA wrt ITRF96
 AREQ     1.3    6.4  -17.6   19.1    3.4   19.5  ESA wrt ITRF96
 GODE     4.9    4.9   24.4   11.2   26.6   14.5  ESA wrt ITRF96
 ALGO     7.6    5.0   17.2    8.6  -18.2   13.6  ESA wrt ITRF96
 MDO1    12.3    5.2   12.5   14.1   -9.1   18.5  ESA wrt ITRF96
 YELL    10.2    6.6    4.9    8.9    2.6   14.0  ESA wrt ITRF96
 GOLD     5.9    5.1   -2.9    8.8  -22.6   13.8  ESA wrt ITRF96
 FAIR    -2.0    6.4  -13.4    9.5   -7.9   16.0  ESA wrt ITRF96
 KOKB    -7.3    5.8   -5.8   11.8   11.2   19.2  ESA wrt ITRF96
 KWJ1   -10.8    6.6  -23.1   23.1   12.7   26.1  ESA wrt ITRF96
 MAC1    -2.5    8.6  -11.6   11.2   17.6   17.7  ESA wrt ITRF96
 TIDB    -7.0    6.4   -7.2   10.2  -13.7   15.7  ESA wrt ITRF96
 HOB2    -9.7    7.7   -9.5   12.9  -12.0   19.2  ESA wrt ITRF96
 GUAM    -7.7    5.5   10.6   19.1   -5.9   19.5  ESA wrt ITRF96
 TSKB    -0.2    5.5    9.9   10.1   28.9   13.4  ESA wrt ITRF96
 SHAO     0.5    5.3   17.1   12.0   -2.3   14.4  ESA wrt ITRF96
 PERT     2.5    5.6  -16.3   13.4    5.9   18.0  ESA wrt ITRF96
 YAR1    -1.6    5.5  -13.4   14.5   24.5   18.5  ESA wrt ITRF96
 IRKT     3.6    6.0   16.3    8.8  -22.5   12.3  ESA wrt ITRF96
 LHAS     6.2    5.4   18.4   13.0    7.7   15.4  ESA wrt ITRF96
 DAV1     0.0   11.0   11.2   15.6    1.8   28.3  ESA wrt ITRF96
 KERG    -5.0   15.6   29.7   40.1    3.0   57.2  ESA wrt ITRF96
 KIT3     9.2    5.1   -3.3   10.4  -24.5   14.2  ESA wrt ITRF96
 MALI     3.0    8.2    3.0   29.4  -17.5   20.8  ESA wrt ITRF96
 ZWEN     0.1    5.4   -1.9    8.6  -19.2   13.5  ESA wrt ITRF96
 TROM    -6.7    6.2    2.7    9.1   10.5   22.0  ESA wrt ITRF96
 POTS    -0.7    4.6   -8.2    7.9  -21.1   13.2  ESA wrt ITRF96
 WTZR     0.5    4.6   -6.6    8.1   -2.2   13.5  ESA wrt ITRF96
 ONSA    -0.3    4.8   -4.7    7.3   -3.6   12.6  ESA wrt ITRF96
 NYAL    -5.0    8.3   -9.7   11.2   34.3   33.8  ESA wrt ITRF96
 KOSG    -2.9    4.7   -9.9    7.7  -17.7   13.3  ESA wrt ITRF96
 Reference sites NOT used 
 MADR     6.3    6.3    6.2   12.5  -19.1   19.5  ESA wrt ITRF96

 4.0 CENTER FITS TO COMBINED SOLUTION 
 CENTER EMR
 -------------------
 VARIANCE RESCALING FACTOR FOR EMR 31
 
 Transformation of loose solution EMR to COMB
 -----------------------------------------------
 For   24 Sites, RMS after 7 parameter transformation  11.1 mm  EMR wrt COMB 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
   -2.5   19.7     97.7   25.0   -184.7   68.3  -2.332  0.798  EMR  CoM
 
 Adjustments to core site positions for EMR
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 MAS1    15.3    4.8    2.6    9.6   40.0   17.8  EMR wrt COMB
 FORT    14.7    6.8  -38.3   18.8   -7.5   35.7  EMR wrt COMB
 SANT     9.4   10.2  -35.1   16.5   38.6   28.3  EMR wrt COMB
 AREQ     2.0    7.2  -37.1   13.6   59.4   25.2  EMR wrt COMB
 ALGO     4.7    4.3   13.7    7.6   -3.4   12.4  EMR wrt COMB
 YELL     7.6    4.9   14.1    6.9  -11.0   14.0  EMR wrt COMB
 GOLD     0.5    5.0   25.4    9.3  -20.6   17.9  EMR wrt COMB
 DRAO     4.2    4.4   19.7    6.7  -12.2   12.4  EMR wrt COMB
 FAIR     6.5    4.8    3.7    6.9   -7.8   14.2  EMR wrt COMB
 KOKB   -22.3    6.5   16.7   11.9  -43.1   22.9  EMR wrt COMB
 TIDB   -21.7    7.2   -5.0   13.3   -2.4   21.5  EMR wrt COMB
 GUAM   -14.7    6.6    2.0   25.9   -9.9   27.3  EMR wrt COMB
 TSKB    -5.7    5.2    3.3    9.8  -24.8   17.4  EMR wrt COMB
 YAR1    -6.1    5.3   -1.9   16.1   15.3   20.0  EMR wrt COMB
 IRKT    -0.1    5.4   -6.5    9.2  -17.6   15.4  EMR wrt COMB
 LHAS    -4.2    5.0    4.3   10.2    3.1   17.7  EMR wrt COMB
 DAV1    33.3    8.8   -0.9   13.3   17.8   25.4  EMR wrt COMB
 KERG    28.8    6.9   28.7   13.2   20.4   19.6  EMR wrt COMB
 KIT3    -0.9    5.3    1.0   14.3    3.2   20.3  EMR wrt COMB
 MALI    15.3    6.7    1.6   32.2    1.0   28.7  EMR wrt COMB
 WTZR     0.4    4.4    4.3    7.7    2.2   13.8  EMR wrt COMB
 ONSA    -4.7    7.4   12.8   13.7   -6.0   31.4  EMR wrt COMB
 NYAL    -7.5    5.1    1.9    6.6  -25.2   19.1  EMR wrt COMB
 KOSG    -0.4    4.7    7.6    8.1   -9.9   15.7  EMR wrt COMB
 Reference sites NOT used 
 
 CENTER JPL
 -------------------
 VARIANCE RESCALING FACTOR FOR JPL 6.71
 
 Transformation of loose solution JPL to COMB
 -----------------------------------------------
 For   31 Sites, RMS after 7 parameter transformation   3.6 mm  JPL wrt COMB 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
    0.5    6.4     -3.2    6.9      0.9    7.2   0.585  0.252  JPL  CoM
 
 Adjustments to core site positions for JPL
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 MAS1     5.7    3.5   -4.9    4.2    3.7   14.6  JPL wrt COMB
 FORT    -0.4    2.2    2.3    3.5    4.3    8.5  JPL wrt COMB
 KOUR     0.7    4.3   -6.1    4.9   78.3   21.6  JPL wrt COMB
 OHIG     2.6    2.8    3.6    2.3   -1.6    6.8  JPL wrt COMB
 BRMU    -0.9    2.9    0.8    2.8  -11.0   12.0  JPL wrt COMB
 SANT     1.1    2.4    2.9    2.3   -0.4    7.3  JPL wrt COMB
 AREQ     4.3    3.6    5.5    4.2   28.7   16.6  JPL wrt COMB
 GODE    -2.2    2.3    0.5    2.1   -0.2    7.9  JPL wrt COMB
 ALGO    -1.9    1.5   -0.2    1.3  -12.8    4.4  JPL wrt COMB
 YELL    -0.2    1.5   -1.2    1.4  -11.3    4.8  JPL wrt COMB
 GOL2    -0.9    1.3   -0.8    1.6  -11.6    4.7  JPL wrt COMB
 FAIR    -1.8    1.6    0.7    1.4   -2.6    4.8  JPL wrt COMB
 KOKB    -3.0    1.5   -0.3    1.9   -3.5    5.8  JPL wrt COMB
 KWJ1     3.0    1.5   -3.8    1.9    8.6    6.4  JPL wrt COMB
 MAC1     8.8    2.1   -2.0    1.8   -4.8    6.0  JPL wrt COMB
 TID2     7.3    1.4   -0.5    1.6   -0.8    4.8  JPL wrt COMB
 GUAM     5.1    1.4    1.1    1.8    2.2    6.1  JPL wrt COMB
 TSKB    -1.5    1.3    0.3    1.3   -3.4    4.6  JPL wrt COMB
 SHAO    -4.5    3.0    2.8    3.4    5.9   12.5  JPL wrt COMB
 PERT    -0.3    1.6   -0.5    1.7   -8.8    6.0  JPL wrt COMB
 YAR1     2.5    1.3   -0.7    1.5  -11.3    4.9  JPL wrt COMB
 IRKT    -3.2    1.6   -0.3    1.3   -5.8    4.6  JPL wrt COMB
 LHAS    -5.1    1.4   -0.3    1.5   -3.0    5.0  JPL wrt COMB
 DAV1     0.0    2.5    1.6    3.2    2.6    7.5  JPL wrt COMB
 KERG     0.0    2.4   -1.6    3.5   -4.6    7.5  JPL wrt COMB
 KIT3    -3.9    1.5    0.9    1.6  -12.1    5.3  JPL wrt COMB
 MALI    -0.9    2.3    1.2    4.3    2.7   10.7  JPL wrt COMB
 MATE     1.2    3.1    1.2    2.7   -4.3   10.7  JPL wrt COMB
 WTZR    -1.5    1.5    2.2    1.5   -2.8    4.5  JPL wrt COMB
 ONSA    -2.0    1.7   -3.8    1.5   -1.5    5.0  JPL wrt COMB
 NYAL     0.3    1.9    1.9    1.9  -19.2    7.0  JPL wrt COMB
 Reference sites NOT used 
 
 CENTER GFZ
 -------------------
 VARIANCE RESCALING FACTOR FOR GFZ 167.5
 
 Transformation of loose solution GFZ to COMB
 -----------------------------------------------
 For   37 Sites, RMS after 7 parameter transformation   4.6 mm  GFZ wrt COMB 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
   -1.9    8.3     52.3    8.1    -51.8   25.8  -0.946  0.361  GFZ  CoM
 
 Adjustments to core site positions for GFZ
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 MAS1    -2.8    2.1   -6.7    4.4    3.0   11.0  GFZ wrt COMB
 FORT    -6.7    2.8   -9.6    7.8   26.5   14.3  GFZ wrt COMB
 KOUR    -3.7    2.8    4.1    8.5    1.1   22.4  GFZ wrt COMB
 OHIG    -7.0    4.3   -3.5    5.9   10.0   11.3  GFZ wrt COMB
 BRMU     3.8    1.8    9.0    3.9    0.0    8.0  GFZ wrt COMB
 SANT    -2.5    3.8   -0.2    7.9   15.8   14.6  GFZ wrt COMB
 AREQ    -3.2    2.5   10.3    5.6   12.3   11.1  GFZ wrt COMB
 WES2     6.8    1.8    7.8    3.6   -9.0    7.3  GFZ wrt COMB
 ALGO     8.7    1.8    6.4    3.6  -10.4    7.3  GFZ wrt COMB
 NLIB     9.9    1.8    0.9    3.5   -0.5    7.2  GFZ wrt COMB
 MDO1     9.8    1.9   -1.9    3.7    1.0    8.1  GFZ wrt COMB
 YELL     8.0    2.3   -4.0    3.5   -9.3    8.3  GFZ wrt COMB
 GOL2     7.3    2.1   -6.7    4.0   -3.2    8.1  GFZ wrt COMB
 DRAO     8.2    2.0   -6.1    3.4   -2.1    7.0  GFZ wrt COMB
 FAIR     2.0    2.3  -12.3    3.7   -1.7    8.2  GFZ wrt COMB
 KOKB    -2.5    2.4   -7.7    5.2   14.6   10.1  GFZ wrt COMB
 KWJ1    -5.6    2.7   18.5    5.9   15.7   12.7  GFZ wrt COMB
 MAC1    -2.2    3.3   -4.5    5.0    4.7    9.8  GFZ wrt COMB
 TID2    -7.4    2.7   -6.7    4.8    0.7    9.3  GFZ wrt COMB
 HOB2    -2.2    2.8   -7.3    4.7   -6.8    9.4  GFZ wrt COMB
 GUAM    -1.7    2.8    7.8    6.2   -0.9   12.8  GFZ wrt COMB
 TSKB    -2.6    2.4   12.6    4.2    2.7    8.3  GFZ wrt COMB
 YAR1    -4.1    2.5   -4.8    5.6    0.8   11.3  GFZ wrt COMB
 IRKT     7.4    2.5    8.5    4.3   -6.3    8.1  GFZ wrt COMB
 LHAS     5.8    2.5    5.5    4.7    0.7    9.6  GFZ wrt COMB
 DAV1    -0.4   11.3    0.4   16.1    0.5   43.3  GFZ wrt COMB
 KERG     2.6    3.3   13.0    5.5   10.2    9.2  GFZ wrt COMB
 KIT3     6.9    2.4   -4.1    4.7   -6.9    9.3  GFZ wrt COMB
 MALI     2.2    3.0   -7.0    8.3   -8.9   14.3  GFZ wrt COMB
 ZWEN     3.6    1.9   -6.0    3.3    0.6    7.0  GFZ wrt COMB
 TROM    -0.7    2.2   -6.3    3.4   -4.8    8.8  GFZ wrt COMB
 MATE    -1.2    1.8   -8.4    3.5   -6.0    7.3  GFZ wrt COMB
 POTS    -2.9    2.0    2.1    3.7   -3.8    7.6  GFZ wrt COMB
 WTZR    -3.1    1.9   -3.6    3.4   -6.6    7.4  GFZ wrt COMB
 ONSA    -0.5    2.0   -7.7    3.3   -3.8    7.8  GFZ wrt COMB
 NYAL    -1.4    2.3   -2.8    3.1  -10.9   10.3  GFZ wrt COMB
 KOSG    -2.0    2.0    1.3    3.5  -19.0    8.2  GFZ wrt COMB
 Reference sites NOT used 
 
 CENTER COD
 -------------------
 VARIANCE RESCALING FACTOR FOR COD 28.26
 
 Transformation of loose solution COD to COMB
 -----------------------------------------------
 For   40 Sites, RMS after 7 parameter transformation   2.6 mm  COD wrt COMB 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
  -11.4    2.6     -2.9    2.7    -33.0    3.5  -1.716  0.208  COD  CoM
 
 Adjustments to core site positions for COD
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 MAS1     0.7    7.3    5.0    9.5    8.2    7.0  COD wrt COMB
 FORT    -0.7    8.4    1.9    8.1  -11.8    9.4  COD wrt COMB
 KOUR    -2.2    8.3   -1.3    8.0   -2.1    9.2  COD wrt COMB
 OHIG     7.9    7.9   -8.6    9.0    6.0    6.7  COD wrt COMB
 BRMU    -0.6    7.0   -1.4    8.8    0.5    7.3  COD wrt COMB
 SANT     2.3    6.9   -6.8    9.4   -5.3    8.3  COD wrt COMB
 AREQ    -1.1    7.8    2.4    9.8    0.1    6.8  COD wrt COMB
 WES2     0.2    6.4   -2.2    9.0    0.3    6.9  COD wrt COMB
 GODE    -0.2    6.4   -2.6    9.4    1.2    6.7  COD wrt COMB
 ALGO    -1.3    6.3   -2.4    9.3    3.3    6.6  COD wrt COMB
 NLIB    -1.6    6.3   -2.2    9.6    3.5    6.6  COD wrt COMB
 MDO1    -2.7    7.0    1.9    9.6    9.7    6.7  COD wrt COMB
 PIE1    -2.8    7.0    2.8    9.2   13.6    7.2  COD wrt COMB
 YELL    -3.7    7.5   -0.7    8.7    3.2    5.8  COD wrt COMB
 GOLD    -1.6    7.3   -2.8    8.6   11.4    7.7  COD wrt COMB
 DRAO    -3.9    7.1    0.1    8.5    9.7    7.2  COD wrt COMB
 FAIR    -3.2    7.9    0.9    8.8   -2.7    5.7  COD wrt COMB
 KOKB    -4.0    7.9    0.6    9.7   -1.1    7.0  COD wrt COMB
 KWJ1     2.2    8.4    5.7   10.4   -3.7    5.8  COD wrt COMB
 MAC1     1.8    6.8   -1.1    8.4   13.5    6.9  COD wrt COMB
 TIDB     0.4    7.0    0.0    8.2   -0.3    7.8  COD wrt COMB
 HOB2     1.4    6.8   -2.2    8.1  -11.6    7.6  COD wrt COMB
 GUAM     4.5    8.2   -4.4    8.5   -8.2    9.0  COD wrt COMB
 TSKB     2.1    7.4   -0.4    8.4  -13.3    8.6  COD wrt COMB
 SHAO     2.8    7.4   -1.3    8.7   -0.1    8.2  COD wrt COMB
 PERT    -3.7    6.9    0.4    8.6   -8.8    7.5  COD wrt COMB
 YAR1    -2.7    7.1   -0.1    8.7   -3.6    7.4  COD wrt COMB
 IRKT     1.2    6.7   -2.5    9.6   -5.7    6.7  COD wrt COMB
 LHAS     0.3    6.9   -7.5   10.5   -5.6    6.3  COD wrt COMB
 DAV1     2.0    7.6    0.0    8.6    1.1    6.2  COD wrt COMB
 KERG     6.5    6.8   -2.4    8.8   -7.2    7.3  COD wrt COMB
 KIT3    -0.5    6.9   -1.3    9.3   -5.3    7.6  COD wrt COMB
 MALI     4.6    8.8    0.9    8.3    2.5    9.1  COD wrt COMB
 ZWEN    -0.8    7.5    2.8    8.2    2.3    6.9  COD wrt COMB
 MATE    -0.3    6.8    2.5    9.0    1.6    7.4  COD wrt COMB
 GRAZ    -3.3    6.7    9.4    8.9    4.4    7.1  COD wrt COMB
 POTS    -2.4    6.8    9.4    8.8    7.3    6.9  COD wrt COMB
 WTZR    -1.8    6.7    3.1    8.9    0.5    7.0  COD wrt COMB
 ONSA     0.0    7.1   -2.9    8.7   -3.4    6.4  COD wrt COMB
 KOSG    -0.4    6.6    5.8    9.0   -4.4    6.7  COD wrt COMB
 Reference sites NOT used 
 
 CENTER SIO
 -------------------
 VARIANCE RESCALING FACTOR FOR SIO 2.384
 
 Transformation of loose solution SIO to COMB
 -----------------------------------------------
 For   42 Sites, RMS after 7 parameter transformation   5.6 mm  SIO wrt COMB 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
   -6.9    5.8    -14.6    5.9   -143.8   19.3  -1.044  0.431  SIO  CoM
 
 Adjustments to core site positions for SIO
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 MAS1     3.3    1.9    2.8    2.8   -4.3    7.3  SIO wrt COMB
 FORT     2.5    2.8    5.0    5.7   -1.6    9.1  SIO wrt COMB
 KOUR    -1.0    2.5    9.3    4.7   -3.0   10.7  SIO wrt COMB
 OHIG    -6.4    4.0   -3.7    5.3   -1.2    9.1  SIO wrt COMB
 BRMU    -0.4    1.4    4.1    3.0    3.1    6.6  SIO wrt COMB
 SANT    -2.2    5.7  -15.4   12.7   -9.6   18.7  SIO wrt COMB
 AREQ     0.3    2.7  -18.8    6.1   -3.5   13.1  SIO wrt COMB
 WES2    -0.2    1.3    5.1    2.6    4.8    4.9  SIO wrt COMB
 GODE    -0.9    1.4    4.3    3.0   -9.5    7.1  SIO wrt COMB
 ALGO    -0.1    1.2    4.9    2.1    1.0    3.9  SIO wrt COMB
 NLIB    -0.6    1.5    6.6    2.8   -4.8    6.5  SIO wrt COMB
 MDO1    -2.3    1.7    4.8    3.0  -17.1    7.5  SIO wrt COMB
 PIE1    -0.5    1.6    5.2    2.9  -13.5    6.3  SIO wrt COMB
 YELL     3.1    1.8    9.3    2.5    2.9    4.9  SIO wrt COMB
 GOLD     0.0    1.8    4.4    3.2  -12.3    7.8  SIO wrt COMB
 DRAO     2.9    1.4    3.6    2.1   -6.7    4.2  SIO wrt COMB
 FAIR     7.8    1.9   -2.8    2.9   -7.8    7.0  SIO wrt COMB
 KOKB    -0.6    2.5   -7.8    3.3  -10.9    6.0  SIO wrt COMB
 KWJ1    -8.6    2.6   -4.8    4.2  -13.1    9.6  SIO wrt COMB
 MAC1    -4.8    2.4    6.6    3.6   16.6    5.8  SIO wrt COMB
 TIDB    -5.4    1.8    5.3    3.1   22.1    5.8  SIO wrt COMB
 HOB2    -4.7    2.0    5.0    3.3   28.8    5.5  SIO wrt COMB
 GUAM   -12.5    2.4  -15.3    4.3   -4.6   13.1  SIO wrt COMB
 TSKB     0.1    2.8  -18.5    6.6 -105.8   84.0  SIO wrt COMB
 SHAO    -1.1    2.1   -6.4    3.4   -0.6    8.3  SIO wrt COMB
 PERT     2.9    1.6    9.3    3.4   28.3    7.8  SIO wrt COMB
 YAR1     2.3    1.6   12.0    3.4   27.7    8.2  SIO wrt COMB
 IRKT     0.6    2.1    5.0    3.3   10.1    6.4  SIO wrt COMB
 LHAS     5.6    2.0    4.4    3.2    0.0    5.9  SIO wrt COMB
 DAV1     0.0    3.0   -1.8    4.6   10.3   11.2  SIO wrt COMB
 KERG    -0.4    2.5   -1.0    4.2   11.3    5.7  SIO wrt COMB
 KIT3     8.1    1.7    0.7    2.4    7.8    4.7  SIO wrt COMB
 MALI     6.0    3.3    5.8    7.4   -8.2   12.2  SIO wrt COMB
 ZWEN     5.0    1.4   -1.6    2.4    7.8    4.6  SIO wrt COMB
 TROM     2.6    1.5   -1.8    2.1    6.8    4.4  SIO wrt COMB
 MATE     7.5    1.6   -2.5    2.5    7.7    5.5  SIO wrt COMB
 GRAZ     6.9    2.1   -6.5    4.9   -2.7   41.3  SIO wrt COMB
 POTS     6.1    1.3   -5.0    2.1    6.1    4.7  SIO wrt COMB
 WTZR     6.6    1.3   -7.8    2.0    5.3    4.6  SIO wrt COMB
 ONSA     4.3    1.3    6.6    1.9    7.1    3.9  SIO wrt COMB
 NYAL    -1.4    1.9   -2.9    2.3   13.3    5.2  SIO wrt COMB
 KOSG     5.0    1.4   -4.4    2.1   12.4    4.2  SIO wrt COMB
 Reference sites NOT used 
 MADR     5.2    1.5   -2.2    2.3    6.0    4.6  SIO wrt COMB
 
 CENTER NGS
 -------------------
 VARIANCE RESCALING FACTOR FOR NGS 322.5
 
 Transformation of loose solution NGS to COMB
 -----------------------------------------------
 For   42 Sites, RMS after 7 parameter transformation  13.4 mm  NGS wrt COMB 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
    4.6   20.7    232.1   19.3    -82.5   74.4  -2.013  1.280  NGS  CoM
 
 Adjustments to core site positions for NGS
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 MAS1    -3.5   15.3   -0.8   19.1   21.2   18.0  NGS wrt COMB
 FORT    -1.4   20.7   -9.9   31.8    4.0   38.1  NGS wrt COMB
 KOUR    -2.2   18.5   -7.6   25.8   15.5   34.4  NGS wrt COMB
 OHIG    30.6   43.1   27.1   49.4   14.3   41.3  NGS wrt COMB
 BRMU    -1.6   14.1    0.6   17.0    3.4   15.7  NGS wrt COMB
 SANT    33.6   35.8    1.9   41.5   35.2   40.0  NGS wrt COMB
 AREQ    33.3   33.9   25.1   36.5   39.6   40.0  NGS wrt COMB
 WES2     4.1   13.1   -2.8   17.3   -1.3   14.9  NGS wrt COMB
 GODE     1.2   13.2   -7.0   17.7    5.0   15.1  NGS wrt COMB
 ALGO     3.5   13.0   -7.3   17.6    0.3   14.9  NGS wrt COMB
 NLIB    -4.1   13.1  -15.8   18.1    5.6   15.9  NGS wrt COMB
 MDO1   -16.2   14.7  -12.5   18.6   10.3   18.2  NGS wrt COMB
 PIE1   -17.3   14.6  -14.7   18.3   12.5   18.5  NGS wrt COMB
 YELL   -17.8   17.0  -41.7   19.5    0.6   15.8  NGS wrt COMB
 GOLD   -22.8   15.1  -19.0   18.2   16.6   19.6  NGS wrt COMB
 DRAO   -25.3   15.3  -30.6   18.5   12.1   17.8  NGS wrt COMB
 FAIR   -48.1   18.4  -30.4   21.6    9.7   18.7  NGS wrt COMB
 KOKB   -46.0   18.9   17.9   24.9   22.0   27.0  NGS wrt COMB
 KWJ1    21.9   20.9   51.3   27.0  -51.4   29.5  NGS wrt COMB
 MAC1     2.7   19.6   -4.2   23.5  -19.2   25.0  NGS wrt COMB
 TIDB    16.9   16.6    1.6   21.1  -21.6   28.0  NGS wrt COMB
 HOB2    14.1   16.8   -3.5   20.9  -39.4   26.4  NGS wrt COMB
 GUAM    12.9   18.7   24.8   20.8  -57.9   26.9  NGS wrt COMB
 TSKB    27.5   16.8   -0.4   19.5  -27.4   21.7  NGS wrt COMB
 SHAO    17.1   15.9  -11.5   19.3  -22.9   20.8  NGS wrt COMB
 PERT    12.3   15.2    6.0   19.5   -4.4   24.8  NGS wrt COMB
 YAR1    13.7   15.6    6.2   19.7   -4.4   25.1  NGS wrt COMB
 IRKT    11.0   15.5  -33.0   20.8  -13.8   17.1  NGS wrt COMB
 LHAS     4.7   14.8  -18.5   21.0  -14.9   17.4  NGS wrt COMB
 DAV1    17.5   21.4   13.2   25.9  -15.7   19.4  NGS wrt COMB
 KERG    15.4   18.1   10.9   23.0   -5.0   20.8  NGS wrt COMB
 KIT3    -4.3   14.2  -15.8   19.1   -0.2   18.0  NGS wrt COMB
 MALI    -4.1   19.9  -14.2   22.4   -2.6   24.9  NGS wrt COMB
 ZWEN   -18.5   14.5   -3.5   16.8   11.3   16.2  NGS wrt COMB
 TROM   -21.9   15.9   19.1   17.4    5.8   14.3  NGS wrt COMB
 MATE   -14.4   13.9    1.0   17.7   17.4   18.6  NGS wrt COMB
 GRAZ   -18.2   13.4   12.9   17.2   13.6   16.8  NGS wrt COMB
 POTS   -18.6   13.4   18.1   17.0   14.9   16.0  NGS wrt COMB
 WTZR   -17.2   13.4    8.9   17.5    9.3   17.7  NGS wrt COMB
 ONSA   -17.4   14.0   11.9   17.4    8.9   17.1  NGS wrt COMB
 NYAL   -17.6   17.4   32.6   18.0   -8.2   15.3  NGS wrt COMB
 KOSG   -15.7   13.2   22.4   17.5    0.1   16.5  NGS wrt COMB
 Reference sites NOT used 
 MADR    -9.5   13.8   11.7   19.0   21.5   17.1  NGS wrt COMB
 
 CENTER ESA
 -------------------
 VARIANCE RESCALING FACTOR FOR ESA 28.272
 
 Transformation of loose solution ESA to COMB
 -----------------------------------------------
 For   36 Sites, RMS after 7 parameter transformation   6.8 mm  ESA wrt COMB 
   X-tran  +-      Y-tran  +-      Z-tran   +-   Scale   +-
   (mm)   (mm)     (mm)   (mm)      (mm)   (mm)  (ppb)  (ppb)
    0.1   13.0    -13.0   13.3    -84.8   79.8  -1.841  0.851  ESA  CoM
 
 Adjustments to core site positions for ESA
 SITE    dNorth  +-     dEast   +-    dUp    +- 
          (mm)  (mm)    (mm)   (mm)   (mm)  (mm)
 MAS1     0.9    5.2  -19.1   13.5    9.2   17.1  ESA wrt COMB
 FORT    -4.0    6.3  -10.1   22.8  -37.3   25.0  ESA wrt COMB
 KOUR    -3.8    5.7    3.6   26.2    3.6   25.3  ESA wrt COMB
 OHIG    12.1   11.4  -11.6   12.7   20.8   20.1  ESA wrt COMB
 BRMU     3.2    4.4   16.7   12.7   12.5   14.7  ESA wrt COMB
 SANT     3.9    9.5    7.2   23.6   10.3   30.0  ESA wrt COMB
 AREQ    -0.7    6.4  -10.8   19.1   11.7   19.5  ESA wrt COMB
 GODE     7.2    4.9   15.1   11.2    8.0   14.5  ESA wrt COMB
 ALGO     7.2    5.0   14.4    8.6  -18.4   13.6  ESA wrt COMB
 MDO1     7.6    5.2   15.8   14.1    6.1   18.5  ESA wrt COMB
 YELL     6.1    6.6   -1.5    8.9    4.8   14.0  ESA wrt COMB
 GOLD     6.5    5.1   -0.6    8.8   -4.4   13.8  ESA wrt COMB
 FAIR    -4.4    6.4  -13.4    9.5    6.8   16.0  ESA wrt COMB
 KOKB    -7.1    5.8   -3.7   11.8   -3.5   19.2  ESA wrt COMB
 KWJ1    -2.2    6.6  -31.2   23.1   23.5   26.1  ESA wrt COMB
 MAC1    -2.5    8.6   -2.7   11.2   21.4   17.7  ESA wrt COMB
 TIDB    -2.6    6.4   -7.2   10.2  -20.5   15.7  ESA wrt COMB
 HOB2    -2.7    7.7   -9.1   12.9  -30.4   19.2  ESA wrt COMB
 GUAM     0.7    5.5    9.8   19.1    1.2   19.5  ESA wrt COMB
 TSKB    -3.0    5.5   14.8   10.1    7.6   13.4  ESA wrt COMB
 SHAO     1.1    5.3   17.5   12.0    7.3   14.4  ESA wrt COMB
 PERT    -1.1    5.6  -18.1   13.4   -1.8   18.0  ESA wrt COMB
 YAR1     0.8    5.5  -16.1   14.5   18.5   18.5  ESA wrt COMB
 IRKT     2.6    6.0   13.7    8.8  -24.2   12.3  ESA wrt COMB
 LHAS     6.1    5.4    9.0   13.0    5.8   15.4  ESA wrt COMB
 DAV1    -7.2   11.0    3.4   15.6   -4.3   28.3  ESA wrt COMB
 KERG    -5.3   15.6   19.2   40.1    1.0   57.2  ESA wrt COMB
 KIT3     3.3    5.1   -1.5   10.4   -8.3   14.2  ESA wrt COMB
 MALI    -5.3    8.2   18.3   29.4   13.2   20.8  ESA wrt COMB
 ZWEN     0.2    5.4   -3.1    8.6   -7.7   13.5  ESA wrt COMB
 TROM    -0.5    6.2   -4.3    9.1    6.0   22.0  ESA wrt COMB
 POTS    -2.6    4.6    0.7    7.9   -3.9   13.2  ESA wrt COMB
 WTZR    -1.3    4.6   -4.4    8.1   -3.6   13.5  ESA wrt COMB
 ONSA    -0.4    4.8   -9.8    7.3  -12.6   12.6  ESA wrt COMB
 NYAL     0.0    8.3   -8.0   11.2    3.9   33.8  ESA wrt COMB
 KOSG    -1.2    4.7   -4.9    7.7  -21.9   13.3  ESA wrt COMB
 Reference sites NOT used 
 MADR     2.2    6.3   10.9   12.5    7.3   19.5  ESA wrt COMB

[Mailed From: Tom Herring <[email-masked]>]