Subject: [IGSMAIL-90] IGS site information and coordinates
From: Claude Boucher and Zuheir Altamimi
Date: 8 SEP 1992 16:54:18

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IGS Electronic Mail        9-SEP-1992 11:05:18       Message Number 90
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                   THIS FILE CONTAINS 3 MESSAGES
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From :    Claude Boucher and Zuheir Altamimi
Subject : IGS site information and coordinates
          ------------------------------------

        Dear Colleagues,

        Please find enclosed an updated version of the two IERS/IGS Tables
which were sent to you in IGS Mail #65:

Table 1: IERS/IGS station list.
Table 2: IERS/IGS station coordinates in the ITRF91 at epoch 1992.5.

Historical review
-----------------

1) The 1st version of Table 1 was sent in IGS Mail #18 on 15-jun-1992

2) The 2nd version of Table 1 was sent in IGS Mail #27 on 24-jun-1992

3) The 3rd version of Table 1 and the 1st version of Table 2 were sent
   in IGS Mail #33 on 1-jul-1992.

4) The 4th version of Table 1 and the 2nd version of Table 2 were sent
   in IGS Mail #65 on 12-aug-1992.

5) The 5th version of Table 1 and the 3rd version of Table 2 in this IGS
   Mail which contains the following updates:

(It should be noted that this version supersedes all the previous ones)

Table 1 updates
---------------

1- Metsahovi local tie according to a Fax from Matti Paunonen,
2- The following stations have been added:

      STATION            Abbr.  DOMES no.(for GPS Marker)
   --------------       ------  -------------------------
   - Victoria            PGC1   40129M002
   - Albert Head         ALBH   40129M003
   - Pasadena     PEQ    JP1Q   40400M007  post-Landers earthquake position
   - Goldstone    PEQ    GOLQ   40405S031  post-Landers earthquake position
   - Pinyon Flats PEQ    PN1Q   40407M003  post-Landers earthquake position
   - Vandenberg          VAND   40420M006
   - SCRIPPS 2           SIO2   40460M002
   - SCRIPPS 2    PEQ    SO2Q   40460M003  post-Landers earthquake position
   - Darwin              DARW   50134M001

3- Local tie at Orroral between CDP 7843 and GPS mark AU005 on which
   Ashtech antenna was mounted and replaced on day 199 by a Trimble antenna

4- Mc Murdo Antenna height, provided by JPL.

Table 2 updates
---------------

The ITRF91 coordinates at epoch 1992.5 for the following sites are updated:

METS, ALBH, PGC1, DARW, VAND, JP1Q,GOLQ,SIO2,SO2Q,PN1Q, ORRO, MCMU,
TAIW and STJO.

Please refer to the notes given at the end of Table 2 explaining how these
coordinates were estimated.

Best regards.

Claude Boucher and Zuheir Altamimi

Institut Geographique National
2 avenue pasteur
B. P. 68
94160 Saint Mande
France

E-mail : BITNET :  BOUCHER at FRIAP51
         SPAN   :  IAPOBS::BIHTERRE
Phone  : (33) 1 43 98 82 09
Fax    : (33) 1 43 98 84 50
Telex  : 261 631 F

TABLE 1 : IERS/IGS STATIONS

Release : 09-SEP-1992

-------------------------------------------------------------------------------
Site          Abbr CDP  DOMES  SLR/  GPS  -------- Local Tie -------  Ant.  RCV
Name                No   No    VLBI  Mark  deltaX   deltaY   deltaZ  Height
-------------------------------------------------------------------------------
Tromsoe       TROM 7602 10302  M002  M003   36.288  -33.115   -9.215  2.473 ROG
Ny-Alesund    NYAL      10317        M001                             5.203 ROG
Onsala        ONSA 7213 10402  S002  M004   52.631  -40.464  -43.865  0.995 ROG
Metsahovi     METS 7601 10503  M002  S011 1918.188 1548.001-1324.627  0.000 MRG
Graz          GRAA 7839 11001  S002  S007     ?        ?        ?     0.000 P12
Graz          GRAZ 7839 11001  S002  M002   -2.533    8.496   -1.298  2.068 ROG
Matera        MATE 7939 12734  S001  M008  -15.173  -24.827   24.965  0.135 ROG
Herstmonceux  HERS 7840 13212  S001  M007    6.505   10.278   -3.945  0.200 MRG
Madrid        MADR 1565 13407  S010  S012 -134.246  159.664  164.275  0.000 ROG
Kootwijk      KOSG 8833 13504  M002  M003  -12.461  -37.503   23.024  0.105 ROG
Zimmerwald    ZIMA 7810 14001  S001  M002    8.448   -0.168   -3.993  0.000 P12
Zimmerwald    ZIMM 7810 14001  S001  M004   13.680    6.012   -6.242  0.000 SSP
Wettzell      WETT 7224 14201  S004  S020   38.697  117.417  -59.322  0.000 ROG
Usuda         USUD 7246 21729  S001  S003     ?        ?        ?     0.000 ROG
Tsukuba       TSUK 7311 21730  S001  S004   -9.814  -31.622   27.107  0.000 MMC
Taipei        TAIW      23601        M001                             1.766 MRG
HartebeesthoekHART 7232 30302  S001  M002 -817.371 2103.044  203.124  9.754 ROG
Maspalomas    MASP      31303        M001                             0.122 MRG
St. Johns     STJO      40101        M001                             0.162 ROG
Algonquin     ALGO 7282 40104  S001  M002   94.763   61.017    6.666  0.114 ROG
Penticton     DRAO 7283 40105  M001  M002 -324.180  178.052   11.636  0.118 ROG
Yellowknife   YELL 7285 40127  M001  M003 -327.848  314.599   82.882  0.117 MRG
Victoria      PGC1 7289 40129  M001  M002     ?        ?        ?     1.235 ROG
Albert Head   ALBH 7289 40129  M001  M003     ?        ?        ?     0.118 ROG
Pasadena      JPL1 7263 40400  M003  M006    1.987  -18.063  -22.052  0.093 ROG
Pasadena  PEQ JP1Q 7263 40400  M003  M007     ?        ?        ?     0.093 ROG
Goldstone     GOLD 7288 40405  M013  S028 2880.020 5222.261 8549.860  0.000 ROG
Goldstone PEQ GOLQ 7288 40405  M013  S031     ?        ?        ?     0.000 ROG
Mojave        MOJ1 7222 40405  S009  S029  -44.831   19.450  -14.456  0.000 MMC
Pinyon Flats  PIN1 7256 40407  M001  M002  125.588  117.655  279.910  1.844 ROG
Pinyon Fl.PEQ PN1Q 7256 40407  M001  M003     ?        ?        ?     1.844 ROG
Fairbanks     FAIR 7225 40408  S002  M001  -74.141   49.280  -31.231 ?0.116 ROG
Vandenberg    VAND 7223 40420  M002  M006     ?        ?        ?     0.903 P12
Kokee Park    KOKB 1311 40424  S001  M004    7.941  -23.617   -4.407  0.093 ROG
Westford      WES1 7209 40440  S003  S019   26.315   42.246   32.467  0.000 MMC
SCRIPPS 1     SIO1      40460        M001                             1.846 ROG
SCRIPPS 2     SIO2      40460        M002                             0.065 P12
SCRIPPS 2 PEQ SO2Q      40460        M002                             0.065 P12
Richmond      RCMA 7219 40499  S001  S013   51.301   14.440    5.158  0.000 MMC
Richmond      7295 7295 40499  M002  M002    0.000    0.000    0.000  0.094 ROG
Santiago      SANT 1404 41705  S006  M003    0.231  -69.610  113.927  0.094 ROG
Canberra      CANB 1545 50103  S010  S017  -60.845 -208.543  -62.592  0.000 ROG
Orroral       ORRO 7843 50103  S007  M107    1.997   14.425   18.837  0.002 P12
Orroral       ORRT 7843 50103  S007  M107    1.997   14.425   18.837  0.000 SSP
Yarragadee    YAR1 7090 50107  M001  M004  -18.605  -12.471   -5.835  0.073 ROG
Hobart        HOBA 7242 50116  S002  S004   52.490   16.986  -25.806  0.000 MMC
Townsville    TOWN      50126        S004                             0.000 SST
Darwin        DARW      50134        M001                             0.310 P12
Wellington    WELL      50208        S002                             0.000 SST
Mc Murdo      MCMU      66001        M001                             4.990 ROG
Pamatai       PAMA      92201        M003                             8.42  ROG
-------------------------------------------------------------------------------

Local Tie:
  Vector given from SLR/VLBI Reference to GPS Marker

Antenna Height:
  Vertical Distance from GPS Marker to Antenna Reference Point (ARP)

-------------------------------------------------------------------------------
Receiver/Antenna       Antenna Reference Point ARP   RCV   ARP to L1  ARP to L2
-------------------------------------------------------------------------------
Rogue Chokering        Bottom of Chokering           ROG     0.078      0.096
Minirogue Chokering    Bottom of Chokering           MRG     0.078      0.096
Trimble SST            Bottom of Preamplifier        SST     0.069      0.068
Trimble SST L2 P-Code  Bottom of Preamplifier        SSP     0.069      0.068
Ashtech L-XII          Bottom of Antenna             L12     0.076      0.076
Ashtech P-XII          Bottom of Antenna             P12     0.076      0.076
Minimac 2816           Bottom of Antenna             MMC     0.107      0.092
-------------------------------------------------------------------------------

TABLE 2 : IERS/IGS STATION COORDINATES IN THE ITRF91 AT 1992.5

RELEASE : 09-SEP-1992

                                           COORDINATES AT 1992.5
SIGMAS            VELOCITIES          SIGMAS
DOMES           NAME      CDP  NOTE               IN METERS
IN METERS           IN M/YEAR          IN M/YEAR
NUMBER                    NUM. (*)        X            Y            Z        Sx
   Sy    Sz     Vx     Vy     Vz   SVx   SVy   SVz
--------- --------------- ---- ---- --------------------------------------
----------------- -------------------- -----------------
10302M002 TROMSOE         7602 (1)   2102904.164   721602.494  5958201.291
0.018 0.017 0.019 -0.017  0.013  0.005 0.003 0.003 0.003
10302M003 TROMSOE         TROM (1)   2102940.451   721569.379  5958192.072
0.018 0.017 0.019 -0.017  0.013  0.005 0.003 0.003 0.003
10317M001 NY-ALESUND      NYAL (5)   1202430.747   252626.638  6237767.492
0.025 0.026 0.023 -0.016  0.010  0.003 0.003 0.003 0.003
10402S002 ONSALA          7213 (1)   3370606.126   711917.453  5349830.677
0.010 0.012 0.013 -0.015  0.016  0.006 0.001 0.002 0.002
10402M004 ONSALA          ONSA (3)   3370658.757   711876.989  5349786.812
0.010 0.012 0.013 -0.015  0.016  0.006 0.001 0.002 0.002
10503M002 METSAHOVI       7601 (1)   2890652.829  1310295.299  5513958.646
0.023 0.019 0.032 -0.018  0.015  0.006 0.003 0.003 0.003
10503S011 METSAHOVI       METS (3)   2892571.017  1311843.300  5512634.019
0.023 0.019 0.032 -0.018  0.015  0.006 0.003 0.003 0.003
11001S002 GRAZ            7839 (1)   4194426.629  1162693.960  4647246.587
0.015 0.015 0.018 -0.017  0.017  0.009 0.002 0.002 0.003
11001M002 GRAZ            GRAZ (3)   4194424.096  1162702.456  4647245.289
0.015 0.015 0.018 -0.017  0.017  0.009 0.002 0.002 0.003
11001S007 GRAZ            GRAA
12734S001 MATERA          7939 (1)   4641964.987  1393070.030  4133262.301
0.013 0.012 0.013 -0.020  0.019  0.014 0.002 0.002 0.002
12734M008 MATERA          MATE (3)   4641949.814  1393045.203  4133287.266
0.013 0.012 0.013 -0.020  0.019  0.014 0.002 0.002 0.002
13212S001 HERSTMONCEUX    7840 (1)   4033463.782    23662.406  4924305.094
0.014 0.014 0.017 -0.014  0.016  0.008 0.002 0.002 0.003
13212M007 HERSTMONCEUX    HERS (3)   4033470.287    23672.684  4924301.149
0.014 0.014 0.017 -0.014  0.016  0.008 0.002 0.002 0.003
13407S010 MADRID          1565 (1)   4849336.750  -360488.843  4114748.727
0.021 0.017 0.019 -0.011  0.022  0.007 0.004 0.003 0.003
13407S012 MADRID          MADR (2)   4849202.506  -360329.179  4114913.003
0.021 0.017 0.019 -0.011  0.022  0.007 0.004 0.003 0.003
13504M002 KOOTWIJK        8833 (1)   3899237.807   396769.262  5015055.271
0.026 0.023 0.026 -0.016  0.017  0.006 0.005 0.004 0.005
13504M003 KOOTWIJK        KOSG (1)   3899225.347   396731.759  5015078.296
0.026 0.023 0.026 -0.016  0.017  0.006 0.005 0.004 0.005
14001S001 ZIMMERWALD      7810 (1)   4331283.600   567549.659  4633140.037
0.022 0.015 0.022 -0.008  0.020  0.016 0.004 0.002 0.004
14001M002 ZIMMERWALD      ZIMA (3)   4331292.048   567549.491  4633136.044
0.022 0.015 0.022 -0.008  0.020  0.016 0.004 0.002 0.004
14001M004 ZIMMERWALD      ZIMM (3)   4331297.280   567555.671  4633133.795
0.022 0.015 0.022 -0.008  0.020  0.016 0.004 0.002 0.004
14201S004 WETTZELL        7224 (1)   4075539.986   931735.217  4801629.302
0.009 0.012 0.013 -0.019  0.017  0.004 0.001 0.002 0.002
14201S020 WETTZELL        WETT (3)   4075578.683   931852.634  4801569.980
0.009 0.012 0.013 -0.019  0.017  0.004 0.001 0.002 0.002
21729S001 USUDA           7246 (1)  -3855355.400  3427427.607  3740971.312
0.040 0.038 0.043 -0.021 -0.009 -0.013 0.003 0.003 0.003
21729S003 USUDA           USUD (2)  -3855262.581  3427432.416  3741020.823
0.028 0.027 0.033 -0.021 -0.009 -0.013 0.003 0.003 0.003
21730S001 TSUKUBA         7311 (1)  -3957172.865  3310237.880  3737708.916
0.030 0.027 0.034  0.004 -0.012 -0.024 0.003 0.003 0.004
21730S004 TSUKUBA         TSUK (3)  -3957182.679  3310206.258  3737736.023
0.030 0.027 0.034  0.004 -0.012 -0.024 0.003 0.003 0.004
23601M001 TAIPEI          TAIW (8)  -3024781.908  4928936.830  2681234.414
0.034 0.045 0.027 -0.023 -0.007 -0.013 0.003 0.003 0.003
30302S001 HARTEBEESTHOEK  7232 (1)   5085442.775  2668263.455 -2768697.163
0.025 0.024 0.020 -0.006  0.021  0.013 0.004 0.004 0.003
30302M002 HARTEBEESTHOEK  HART (3)   5084625.404  2670366.499 -2768494.039
0.100 0.100 0.100 -0.006  0.021  0.013 0.004 0.004 0.003
31303M001 MASPALOMAS      MASP (4)   5439189.116 -1522054.921  2953464.053
0.030 0.030 0.030 -0.003  0.020  0.016 0.003 0.003 0.003
40101M001 ST. JOHNS       STJO (8)   2612631.354 -3426806.994  4686757.753
0.012 0.013 0.014 -0.018  -.002  0.009 0.003 0.003 0.003
40104S001 ALGONQUIN       7282 (1)    918034.853 -4346132.243  4561971.133
0.008 0.012 0.012 -0.016 -0.004 -0.001 0.001 0.002 0.002
40104M002 ALGONQUIN       ALGO (1)    918129.616 -4346071.224  4561977.800
0.009 0.013 0.013 -0.016 -0.004 -0.001 0.001 0.002 0.002
40105M001 PENTICTON       7283 (1)  -2058840.427 -3621286.472  4814420.827
0.020 0.030 0.040 -0.024 -0.016  0.010 0.001 0.001 0.002
40105M002 PENTICTON       DRAO (3)  -2059164.607 -3621108.420  4814432.463
0.020 0.030 0.040 -0.024 -0.016  0.010 0.001 0.001 0.002
40127M001 YELLOWKNIFE     7285 (1)  -1224124.521 -2689530.646  5633555.403
0.019 0.022 0.024 -0.022 -0.001 -0.005 0.003 0.003 0.003
40127M003 YELLOWKNIFE     YELL (1)  -1224452.369 -2689216.048  5633638.286
0.019 0.022 0.023 -0.022 -0.001 -0.005 0.003 0.003 0.003
40129M002 VICTORIA        7289 (1)  -2341310.088 -3539083.864  4745768.350
0.028 0.039 0.047 -0.018 -0.001 -0.010 0.003 0.003 0.003
40129M002 VICTORIA        PGC1 (1)  -2327188.034 -3522528.950  4764832.354
0.020 0.020 0.022 -0.018 -0.001 -0.010 0.003 0.003 0.003
40129M003 ALBERT HEAD     ALBH (8)  -2341332.830 -3539049.498  4745791.391
0.009 0.011 0.013 -0.018 -0.001 -0.010 0.003 0.003 0.003
40400M003 PASADENA        7263 (1)  -2493306.036 -4655197.551  3565519.412
0.013 0.015 0.017 -0.032  0.019  0.006 0.001 0.001 0.002
40400M006 PASADENA        JPL1 (1)  -2493304.048 -4655215.614  3565497.359
0.013 0.015 0.017 -0.032  0.019  0.006 0.001 0.001 0.002
40400M007 PASADENA PEQ    JP1Q (8)  -2493304.063 -4655215.549  3565497.339
0.011 0.014 0.012 -0.032  0.019  0.006 0.001 0.001 0.002
40405M013 GOLDSTONE       7288 (1)  -2356494.086 -4646607.651  3668426.621
0.010 0.011 0.011 -0.014  0.007 -0.008 0.001 0.001 0.001
40405S028 GOLDSTONE       GOLD (2)  -2353614.064 -4641385.383  3676976.495
0.010 0.011 0.011 -0.014  0.007 -0.008 0.001 0.001 0.001
40405S031 GOLDSTONE PEQ   GOLQ (8)  -2353614.083 -4641385.406  3676976.471
0.010 0.014 0.012 -0.014  0.007 -0.008 0.001 0.001 0.001
40405S009 MOJAVE          7222 (1)  -2356170.964 -4646755.860  3668470.592
0.008 0.009 0.009 -0.014  0.007 -0.008 0.001 0.001 0.001
40405S029 MOJAVE          MOJ1 (3)  -2356215.795 -4646736.410  3668456.136
0.008 0.009 0.009 -0.014  0.007 -0.008 0.001 0.001 0.001
40407M001 PINYON FLATS    7256 (1)  -2369635.959 -4761324.891  3511116.170
0.013 0.016 0.018 -0.024  0.015  0.002 0.001 0.001 0.002
40407M002 PINYON FLATS    PIN1 (1)  -2369510.370 -4761207.237  3511396.079
0.013 0.016 0.018 -0.024  0.015  0.002 0.001 0.001 0.002
40407M003 PINYON FL. PEQ  PN1Q (8)  -2369510.358 -4761207.200  3511396.135
0.010 0.015 0.012 -0.024  0.015  0.002 0.001 0.001 0.002
40408S002 FAIRBANKS       7225 (1)  -2281547.187 -1453645.056  5756993.208
0.009 0.009 0.013 -0.024 -0.005 -0.008 0.001 0.001 0.002
40408M001 FAIRBANKS       FAIR (1)  -2281621.327 -1453595.775  5756961.976
0.010 0.010 0.013 -0.024 -0.005 -0.008 0.001 0.001 0.002
40420M006 VANDENBE        VAND (9)  -2678089.782 -4525437.790  3597431.483
0.021 0.022 0.023 -0.030  0.029  0.018 0.001 0.002 0.002
40424S001 KOKEE PARK      1311 (1)  -5543846.020 -2054563.905  2387813.977
0.010 0.013 0.013 -0.011  0.062  0.030 0.001 0.002 0.002
40424M004 KOKEE PARK      KOKB (1)  -5543838.080 -2054587.522  2387809.570
0.011 0.013 0.014 -0.011  0.062  0.030 0.001 0.002 0.002
40440S003 WESTFORD        7209 (1)   1492206.701 -4458130.500  4296015.503
0.008 0.008 0.009 -0.015 -0.002  0.000 0.001 0.001 0.001
40440S019 WESTFORD        WES1 (3)   1492233.016 -4458088.254  4296047.970
0.008 0.008 0.009 -0.015 -0.002  0.000 0.001 0.001 0.001
40460M001 SCRIPPS 1       SIO1 (1)  -2455521.643 -4767213.470  3441654.918
0.026 0.023 0.028 -0.014 -0.001 -0.011 0.003 0.003 0.003
40460M002 SCRIPPS 2       SIO2 (9)  -2455539.230 -4767224.106  3441628.871
0.021 0.026 0.023 -0.014 -0.001 -0.011 0.003 0.003 0.003
40460M003 SCRIPPS 2 PEQ   SO2Q (9)  -2455539.208 -4767224.089  3441628.869
0.021 0.022 0.023 -0.014 -0.001 -0.011 0.003 0.003 0.003
40499S001 RICHMOND        7219 (1)    961258.127 -5674090.035  2740533.758
0.008 0.008 0.013 -0.009 -0.001 -0.003 0.001 0.001 0.002
40499S013 RICHMOND        RCMA (3)    961309.428 -5674075.595  2740538.916
0.008 0.008 0.013 -0.009 -0.001 -0.003 0.001 0.001 0.002
40499M002 RICHMOND        7295 (1)    961319.005 -5674090.966  2740489.547
0.009 0.010 0.011 -0.009 -0.001 -0.003 0.001 0.001 0.002
41705S006 SANTIAGO        1404 (1)   1769692.997 -5044504.493 -3468435.065
0.030 0.038 0.032  0.001 -0.005  0.008 0.003 0.003 0.003
41705M003 SANTIAGO        SANT (3)   1769693.228 -5044574.103 -3468321.138
0.030 0.038 0.032  0.001 -0.005  0.008 0.003 0.003 0.003
50103S010 CANBERRA        1545 (1)  -4460935.246  2682765.724 -3674381.413
0.028 0.024 0.024 -0.037 -0.003  0.046 0.004 0.003 0.003
50103S017 CANBERRA        CANB (3)  -4460996.091  2682557.181 -3674444.005
0.028 0.024 0.024 -0.037 -0.003  0.046 0.004 0.003 0.003
50103S007 ORRORAL         7843 (1)  -4446476.910  2678127.019 -3696251.449
0.023 0.019 0.019 -0.037 -0.003  0.046 0.004 0.003 0.003
50103M107 ORRORAL         ORRO (3)  -4446474.913  2678141.444 -3696232.612
0.023 0.019 0.019 -0.037 -0.003  0.046 0.004 0.003 0.003
50103M107 ORRORAL         ORRT (3)  -4446474.913  2678141.444 -3696232.612
0.023 0.019 0.019 -0.037 -0.003  0.046 0.004 0.003 0.003
50107M001 YARRAGADEE      7090 (1)  -2389006.727  5043329.300 -3078525.090
0.018 0.018 0.019 -0.050  0.005  0.053 0.003 0.003 0.003
50107M004 YARRAGADEE      YAR1 (1)  -2389025.331  5043316.830 -3078530.926
0.019 0.018 0.019 -0.050  0.005  0.053 0.003 0.003 0.003
50134M001 DARWIN          DARW (9)  -4091358.538  4684606.556 -1408580.712
0.039 0.037 0.035 -0.038 -0.015  0.060 0.003 0.003 0.003
50116S002 HOBART          7242 (1)  -3950236.533  2522347.562 -4311562.808
0.030 0.025 0.029 -0.046  0.012  0.035 0.005 0.004 0.005
50116S004 HOBART          HOBA (3)  -3950184.043  2522364.548 -4311588.614
0.030 0.025 0.029 -0.046  0.012  0.035 0.005 0.004 0.005
50126S004 TOWNSVILLE      TOWN (6)  -5041024.823  3296980.221 -2090553.399
0.050 0.050 0.043 -0.033 -0.016  0.054 0.003 0.003 0.003
50208S002 WELLINGTON      WELL (6)  -4780648.772   436507.143 -4185440.391
0.050 0.052 0.044 -0.025  0.003  0.029 0.003 0.003 0.003
66001M001 MC MURDO        MCMU (8)  -1310695.250   310468.880 -6213363.449
0.012 0.011 0.026  0.010 -0.010 -0.003 0.003 0.003 0.003
92201M003 PAMATAI         PAMA (7)  -5245195.148 -3080472.201 -1912825.643
0.060 0.057 0.037 -0.042  0.052  0.031 0.003 0.003 0.003
________________________________________________________________________________
____________________________________________________
(1) Coordinates issued from the ITRF91 solution.
(2) Coordinates issued from the ITRF91 solution and reduced to the bottom
    of the choke ring, since the coordinates were initially referred to the
    top of the choke ring.
(3) Coordinates referred to GPS marks, obtained by adding the local tie
    values from Table 1 to the SLR/VLBI mark coordinates.
(4) Coordinates estimated by AIUB/THD in the ITRF90 and then transformed by
    IGN into the ITRF91.
(5) Coordinates for Ny-Alesund, issued from ITRF91 and taking into account
    that the actual antenna height is 5.203 instead of 1.740 which was used
    in JPL GIG'91 solution.
(6) Coordinates estimated by SIO (IGS mail #35), transformed into
    ITRF91 by applying 7 transformation parameters and then reduced to
    the bottom of preamplifier of the TRIMBLE antenna since the coordinates
    were initially referred to the L1 phase center.
(7) Coordinates estimated by SIO (IGS mail #56), transformed into
    ITRF91 by applying 7 transformation parameters.
(8) JPL estimation expressed in ITRF91 (provided by G. Blewitt)
(9) Coordinates estimated by SIO (IGS mail #72), transformed into
    ITRF91 by applying 7 transformation parameters.

==============================================================================

From:     Gunnar Hedling
Subject:  Swedish IGS-stations
          --------------------

GPS-observation data from the Swedish IGS-stations

The following Swedish IGS stations have P-code receivers
during the whole IGS campaign:

- Onsala (core station); ONSA; Rouge SNR-800
- Martsbo; MART(*); Ashtech P-XII
- Furuogrund; FURU(*); Ashtech P-XII
- Kiruna; KIRU(*); Ashtech P-XII
- Stockholm; LOVO; Ashtech P-XII

Onsala is equipped with a H-maser frequency standard.
Martsbo, Furuogrund and Kiruna are equipped with
rubidium standards. In Stockholm the receiver
uses the internal quartz oscillator

Observation data is available via anonymous ftp from
gere.oso.chalmers.se;
Rogue data in compressed binary and
Ashtech data in compressed RINEX format.
We intend to continue to make the Rinex-files available
during the rest of the IGS campaign 

Further information from Gunnar Hedling, email: [email-masked]

RINEX-filer to Onsala
(* mean that the files are not complete for that day)

       MART     LOVO     FURU    KIRU
188     X  
189	X
190	X		  X
191	X		  X
192	X		  X	  X*1
193			  X	  X
194	X*   		  X	  X
195	X 		  X	  X
196	X			  X
197			  X*	  X
207	X	 X	  X	  X
208	  		  X	  X
209	X		  X	  X
210	X			  X
211	X	 X*	  X*      X
212	X	 X	  X 	  X*
213	X	 X	  X	  X
214	X*		  X*	  X*
215	X*                X       X
216     X                 X       X
217                       X*      X*
218                       X       X
219     X		  X	  X*
220                               X
242     X        X        X
243     X*       X*       X
244     X        X        X       X*
245     X        X        X       X
246     X        X        X       X
247     X        X        X       X
248     X        X        X       X
249     X        X                X
250     X                         X
251     X        X*       X       X

==============================================================================

From:     Dennis McCarthy
Subject:  Preliminary look at GPS Earth orientation
          -----------------------------------------

Date:     8 September 1992

An updated look at Earth orientation data submitted to the IERS
follows.  Units are milliseconds of arc for x and y, and
milliseconds of time for UT1-UTC.

Contributor Data Span Points       Mean          Standard Deviation
                                (NEOS-GPS)  
                              x     y   UT1-UTC   x     y   UT1-UTC
U. of Texas  48794.5    53  -0.80 -2.78          1.34  1.84  
             -48848.5

Scripps      48780.5    82  -1.14 -1.55          0.68  0.54
             -48862.5     

U. of Berne  48792.5     8  -0.38  0.19  -1.50   1.64  1.72  0.14 
 (ITRF90)    -48799.5

U. of Berne  48800.5    57  -0.44  0.32  -0.22   0.77  0.93  0.28 
(ITRF91)    -48856.5

JPL          48794.5    56  -1.30 -0.05          0.67  0.98 
             -48855.5

GFZ          48795.0    48  -2.53  -1.74         1.32  1.43
             -48842.5

ESOC         48763.5    65  -1.64  0.74          1.42  2.30
             -48849.5

Plots are available by FAX to anyone interested.

Regards,

Dennis McCarthy
  [email-masked]