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SLR-Report No.6953

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Date:2006-04-06 13:15:00
Sender:Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>>
Subject:[SLR-Report] No. 6953: Delft QL Report April 06, 2006
Author:Ron Noomen
Content:********************************************************************************
SLR Electronic Report 2006-04-06 13:15:00 UTC Message No. 6953
********************************************************************************

Author: Ron Noomen
Subject: Delft QL Report April 06, 2006


WEGENER-2 IERS

REPORT OF THE QUICK-LOOK DATA ANALYSIS CENTER
DELFT UNIVERSITY OF TECHNOLOGY
FACULTY OF AEROSPACE ENGINEERING
THE NETHERLANDS


April 5, 2006


This is a daily report, presenting the results of a continuing analysis of the
most recent global LAGEOS-1 and LAGEOS-2 quick-look laser ranging data. The
report consists of (A) a pass summary, (B) an overview of the analysis results,
detailed statistics of the analysed measurements, and an accumulative pass
overview and (C) the earth rotation parameter solutions submitted to IERS. The
report is based on all quick-look data as received until Wed, Apr 5, 2006.
Questions and comments should be addressed to:

R. Noomen
Delft University of Technology
Faculty of Aerospace Engineering
Delft Institute for Earth-Oriented Space Research
Kluyverweg 1
2629 HS Delft
The Netherlands

Telephone: +31-15-2785377
Telefax : +31-15-2785322
E-mail : ron.noomen@deos.tudelft.nl


A. PASS SUMMARY

The table below gives an overview of the ranging data both on LAGEOS-1 and
LAGEOS-2, as received by the Quick-Look Data Analysis Center (QLDAC) on Wed,
Apr 5, 2006. All data were obtained through the NASA Crustal Dynamics Data
Information system (CDDIS) and the Eurolas Data Center (EDC) in Germany.
The data are unscreened and may span more than a week due to late reporting
by the stations.

------------------------------------------------------------------------------
Station System/Location Period No. of Passes
ID LAGEOS-1 LAGEOS-2
------------------------------------------------------------------------------
1864 Maidanak, Uzbekistan (site 2) 060404 - 060405 2 -
1873 Simeiz, Crimea, Ukraine 060404 - 060405 2 -
6810 Zimmerwald 846, Switzerland 060404 - 060406 3 2
7090 Yarragadee, Australia 060404 - 060405 4 3
7105 Greenbelt, Maryland 060404 - 060405 1 1
7110 Monument Peak, California 060404 - 060404 - 1
7124 Papeete, Tahiti 060405 - 060405 1 1
7237 Changchun, China 060405 - 060405 1 -
7406 San Juan, Argentina 060404 - 060405 2 3
7501 Hartebeesthoek, SA (MOB-6) 060404 - 060405 4 3
7810 Zimmerwald 423, Switzerland 060404 - 060406 2 2
7824 San Fernando, Spain 060404 - 060404 1 -
7825 Mount Stromlo, Australia 060404 - 060406 7 5
7832 Riyad, Saudi Arabia 060404 - 060404 2 -
7839 Graz, Austria 060404 - 060404 3 4
7841 Potsdam, Germany 060404 - 060406 3 2
7941 Matera, Italy (MLRO 532) 060404 - 060405 4 2
------ ------ --- ---
TOTAL 060404 - 060406 42 29
------------------------------------------------------------------------------


B. ANALYSIS RESULTS

The analysis is based on two orbit solutions using global quick-look normal
points that cover a period of 8 days which are computed simultaneously. This
week´s data interval runs from Tue, Mar 28, 2006 to Wed, Apr 5, 2006. The
measurement and dynamic models used in this analysis are close to the IERS
Standard. The overall model is referred to as QLDACMOD11. The details of this
model can be obtained on request. The terrestrial reference frame is provided
by the ITRF2000 station coordinates solution (extended with coordinates
of new stations, where necessary).

The general statistics and results of this week´s analysis are thus:

-----------------------------------------------------------------------
Satellite LAGEOS-1 LAGEOS-2
Number of Stations 26 17
Number of Passes 193/192 116/116
Number of Normal Points 1872/1852 1391/1368
Weighted RMS of Fit (mm) 16 13
-----------------------------------------------------------------------


Residual statistics per station. The header line for each station shows
the station id, its name, whether the position is solved for or not and the
measurement accuracy in mm. Rejected observations are not used for the
calculation of the rms-of-fit, the biases or the scatter. The latter holds
w.r.t. the residual trend line described by the bias estimates. Uncertainties
are 3-sigma values.

--------------------------------------------------------------------------------
Date Time Sat. Obs. RMS Range Bias Time Bias Scatter
tot/rej (mm) (mm) (us) (mm)
--------------------------------------------------------------------------------
Station 1864 (Maidanak) (position fixed, acc. 200 mm)
1864 2 Apr 06 15:09 LAG1 11 0 43 -37 +- 183 7 +- 101 22
1864 2 Apr 06 18:57 LAG1 4 0 46 -64 +- 682 39 +-1060 16
1864 3 Apr 06 17:17 LAG1 8 0 26 -26 +- 325 -5 +- 214 16
1864 4 Apr 06 16:01 LAG1 11 0 50 -39 +- 186 -8 +- 125 22

Station 1873 (Simeiz) (position fixed, acc. 200 mm)
1873 28 Mar 06 19:02 LAG1 4 0 60 155 +-2325 -50 +-1004 42
1873 31 Mar 06 21:48 LAG1 5 0 34 23 +- 270 -9 +- 581 24
1873 2 Apr 06 18:51 LAG1 1 0 152 0 +- 0 0 +- 0 0
1873 3 Apr 06 01:03 LAG2 7 0 108 102 +- 367 -7 +- 621 23
1873 4 Apr 06 19:58 LAG1 4 0 127 297 +-1163 -142 +- 881 25

Station 1884 (Riga) (position fixed, acc. 100 mm)
1884 29 Mar 06 17:27 LAG1 15 0 19 -7 +- 82 12 +- 53 6
1884 29 Mar 06 21:09 LAG1 8 0 5 -2 +- 139 0 +- 156 4

Station 1893 (Kazivili) (position fixed, acc. 100 mm)
1893 31 Mar 06 18:01 LAG1 11 0 56 81 +- 134 43 +- 88 13
1893 2 Apr 06 18:49 LAG1 8 0 22 30 +- 291 26 +- 168 7

Station 6810 (Zimmerwald 846) (position fixed, acc. 60 mm)
6810 29 Mar 06 14:53 LAG2 8 0 5 7 +- 439 -5 +- 210 1
6810 29 Mar 06 17:24 LAG1 18 0 19 -10 +- 43 10 +- 27 1
6810 29 Mar 06 20:42 LAG1 18 0 12 -3 +- 43 -4 +- 18 2
6810 31 Mar 06 06:41 LAG2 14 0 19 9 +- 79 7 +- 56 2
6810 31 Mar 06 07:45 LAG1 4 0 9 6 +- 168 -4 +- 273 2
6810 31 Mar 06 10:41 LAG2 6 0 27 15 +- 163 -13 +- 173 3
6810 31 Mar 06 11:19 LAG1 6 0 35 36 +- 309 38 +- 171 1
6810 31 Mar 06 21:41 LAG1 16 0 4 1 +- 45 -1 +- 26 3
6810 1 Apr 06 08:31 LAG2 22 0 17 16 +- 39 1 +- 24 5
6810 1 Apr 06 09:51 LAG1 9 0 8 25 +- 205 14 +- 114 2
6810 1 Apr 06 20:09 LAG1 7 0 29 59 +- 721 10 +- 262 5
6810 2 Apr 06 06:29 LAG2 23 0 14 11 +- 39 2 +- 24 5
6810 2 Apr 06 08:23 LAG1 10 0 22 28 +- 122 6 +- 92 5
6810 2 Apr 06 10:57 LAG2 6 0 37 38 +- 127 2 +- 165 7
6810 2 Apr 06 12:11 LAG1 6 0 17 21 +- 169 4 +- 131 5
6810 3 Apr 06 09:11 LAG2 7 0 15 23 +- 145 -8 +- 126 3
6810 3 Apr 06 10:37 LAG1 12 0 17 16 +- 55 2 +- 25 6
6810 3 Apr 06 12:50 LAG2 11 0 14 15 +- 55 -1 +- 40 1
6810 4 Apr 06 06:59 LAG2 20 0 11 1 +- 46 6 +- 30 4
6810 4 Apr 06 09:57 LAG1 2 0 8 123 +-3876 -45 +-1521 0
6810 4 Apr 06 11:07 LAG2 14 0 15 15 +- 55 -7 +- 29 5
6810 4 Apr 06 12:55 LAG1 17 0 12 10 +- 44 -4 +- 27 4
6810 4 Apr 06 16:22 LAG1 8 0 8 11 +- 93 4 +- 91 1

Station 7080 (McDonald Obs.) (position fixed, acc. 20 mm)
7080 30 Mar 06 04:15 LAG1 15 0 12 8 +- 17 6 +- 10 2
7080 30 Mar 06 11:41 LAG2 17 0 15 -12 +- 17 11 +- 14 5
7080 31 Mar 06 03:10 LAG1 5 0 20 -27 +- 48 16 +- 65 6
7080 31 Mar 06 06:29 LAG1 16 0 20 8 +- 16 13 +- 13 2
7080 2 Apr 06 03:41 LAG1 18 0 12 11 +- 15 0 +- 9 4
7080 2 Apr 06 07:35 LAG1 6 0 4 -7 +- 83 4 +- 86 1
7080 2 Apr 06 10:03 LAG2 6 0 24 -26 +- 30 -5 +- 39 1

Station 7090 (Yarragadee) (position fixed, acc. 10 mm)
7090 29 Mar 06 00:17 LAG1 3 0 19 -37 +- 125 -15 +- 104 0
7090 29 Mar 06 03:41 LAG1 8 0 22 3 +- 15 15 +- 10 2
7090 29 Mar 06 08:11 LAG2 2 0 8 -172 +-1511 118 +- 995 0
7090 29 Mar 06 11:45 LAG2 22 0 23 12 +- 9 -16 +- 6 4
7090 29 Mar 06 12:49 LAG1 4 0 7 -11 +- 74 -7 +- 116 2
7090 29 Mar 06 20:01 LAG1 4 0 6 12 +- 115 -5 +- 97 1
7090 29 Mar 06 20:09 LAG2 19 0 10 -5 +- 9 -4 +- 6 3
7090 29 Mar 06 23:08 LAG1 6 0 5 -9 +- 31 10 +- 40 1
7090 30 Mar 06 02:35 LAG1 3 0 5 -4 +- 53 17 +- 101 0
7090 30 Mar 06 09:53 LAG2 21 0 8 0 +- 11 4 +- 6 1
7090 30 Mar 06 13:57 LAG2 11 0 6 7 +- 17 1 +- 17 0
7090 30 Mar 06 14:49 LAG1 9 0 44 -35 +- 15 -23 +- 7 5
7090 30 Mar 06 18:11 LAG2 9 0 3 2 +- 46 0 +- 29 0
7090 30 Mar 06 18:27 LAG1 11 0 40 35 +- 12 -21 +- 13 1
7090 1 Apr 06 19:07 LAG2 5 0 3 42 +- 476 -17 +- 199 3
7090 1 Apr 06 19:23 LAG1 6 0 20 28 +- 40 -11 +- 46 1
7090 1 Apr 06 22:21 LAG1 16 0 4 3 +- 10 1 +- 9 3
7090 2 Apr 06 20:33 LAG2 22 0 18 9 +- 9 -13 +- 7 2
7090 2 Apr 06 21:15 LAG1 8 0 4 -2 +- 15 -5 +- 30 0
7090 3 Apr 06 00:42 LAG1 10 0 14 -14 +- 35 0 +- 19 1
7090 3 Apr 06 04:03 LAG1 10 0 20 -21 +- 14 8 +- 10 2
7090 3 Apr 06 10:17 LAG2 22 0 5 0 +- 9 -3 +- 6 1
7090 3 Apr 06 12:53 LAG1 19 0 6 5 +- 9 -2 +- 8 1
7090 3 Apr 06 14:28 LAG2 12 0 3 0 +- 12 1 +- 8 2
7090 3 Apr 06 16:20 LAG1 18 0 12 -13 +- 11 -6 +- 6 2
7090 3 Apr 06 19:03 LAG2 12 0 6 -13 +- 35 5 +- 20 2
7090 3 Apr 06 19:55 LAG1 10 0 10 10 +- 13 -2 +- 15 2
7090 3 Apr 06 23:21 LAG1 8 0 6 -5 +- 27 0 +- 25 4
7090 4 Apr 06 03:03 LAG1 2 0 1 97 +-1773 -43 +- 793 0
7090 4 Apr 06 08:33 LAG2 14 0 11 7 +- 16 3 +- 11 1
7090 4 Apr 06 12:21 LAG2 26 0 10 -10 +- 8 0 +- 5 2
7090 4 Apr 06 15:03 LAG1 11 0 16 -12 +- 12 -5 +- 5 4
7090 4 Apr 06 16:41 LAG2 20 0 1 0 +- 9 0 +- 6 1
7090 4 Apr 06 18:59 LAG1 5 0 6 35 +- 117 -21 +- 72 3
7090 4 Apr 06 20:47 LAG2 13 0 16 9 +- 14 -9 +- 16 1
7090 4 Apr 06 21:55 LAG1 10 0 4 2 +- 13 4 +- 19 2

Station 7105 (Greenbelt) (position fixed, acc. 10 mm)
7105 28 Mar 06 00:00 LAG1 16 0 4 -5 +- 11 0 +- 7 0
7105 28 Mar 06 03:27 LAG1 11 0 16 -2 +- 15 12 +- 12 1
7105 30 Mar 06 00:39 LAG1 21 0 13 -12 +- 9 2 +- 5 3
7105 30 Mar 06 04:39 LAG1 7 0 14 9 +- 90 3 +- 47 1
7105 30 Mar 06 23:49 LAG1 5 0 26 -23 +- 117 -1 +- 63 0
7105 1 Apr 06 21:01 LAG1 3 0 2 -2 +- 45 -3 +- 152 0
7105 2 Apr 06 00:11 LAG1 17 0 14 -13 +- 10 -2 +- 6 1
7105 2 Apr 06 19:38 LAG1 10 0 6 9 +- 20 -5 +- 13 2
7105 4 Apr 06 16:55 LAG1 5 0 6 -9 +- 65 -2 +- 47 0

Station 7110 (Monument Peak) (position fixed, acc. 10 mm)
7110 28 Mar 06 23:05 LAG1 9 0 10 -8 +- 14 -8 +- 19 4
7110 28 Mar 06 23:41 LAG2 5 0 10 24 +- 132 16 +- 66 3
7110 4 Apr 06 22:28 LAG2 9 0 9 -5 +- 29 -7 +- 18 5

Station 7124 (Papeete) (position fixed, acc. 10 mm)
7124 28 Mar 06 06:51 LAG1 11 0 9 8 +- 12 6 +- 16 1
7124 28 Mar 06 10:14 LAG1 6 0 6 7 +- 75 1 +- 40 3
7124 28 Mar 06 10:36 LAG2 11 0 6 0 +- 12 6 +- 13 1
7124 29 Mar 06 08:32 LAG2 3 0 3 -12 +- 144 -18 +- 261 0
7124 30 Mar 06 06:43 LAG2 7 0 3 -1 +- 67 0 +- 57 2
7124 30 Mar 06 07:29 LAG1 11 0 19 34 +- 26 12 +- 16 3
7124 30 Mar 06 11:06 LAG1 10 0 12 -7 +- 13 1 +- 14 9
7124 31 Mar 06 09:41 LAG1 7 0 12 6 +- 55 9 +- 30 2
7124 3 Apr 06 07:03 LAG2 5 0 12 12 +- 20 2 +- 88 2
7124 3 Apr 06 09:01 LAG1 9 0 4 15 +- 65 5 +- 27 2
7124 3 Apr 06 11:11 LAG2 18 0 12 9 +- 9 3 +- 6 4

Station 7237 (Changchun) (position fixed, acc. 50 mm)
7237 28 Mar 06 14:56 LAG1 2 0 8 -7 +- 110 -21 +- 381 0
7237 29 Mar 06 13:21 LAG1 4 0 13 57 +- 619 34 +- 315 3
7237 30 Mar 06 11:53 LAG1 15 0 75 73 +- 40 2 +- 21 20

Station 7249 (Beijing) (position solved, acc. 50 mm)
7249 28 Mar 06 11:33 LAG1 3 0 34 88 +- 460 -82 +- 405 29
7249 28 Mar 06 14:59 LAG1 5 0 16 27 +- 151 -28 +- 149 10
7249 29 Mar 06 13:30 LAG1 2 0 75 -387 +- 564 -507 +- 730 0
7249 30 Mar 06 15:37 LAG1 7 0 46 16 +- 85 31 +- 110 43

Station 7406 (San Juan) (position solved, acc. 100 mm)
7406 28 Mar 06 02:31 LAG2 9 0 61 80 +- 129 28 +- 75 3
7406 28 Mar 06 02:49 LAG1 11 0 127 -121 +- 98 12 +- 97 8
7406 29 Mar 06 00:29 LAG2 23 0 57 49 +- 66 32 +- 42 4
7406 29 Mar 06 01:19 LAG1 11 0 87 -144 +- 179 -70 +- 162 4
7406 29 Mar 06 04:49 LAG1 13 0 91 -7 +- 157 45 +- 84 5
7406 29 Mar 06 05:15 LAG2 13 0 10 -7 +- 163 11 +- 119 2
7406 29 Mar 06 08:21 LAG1 7 0 75 145 +- 230 165 +- 252 1
7406 29 Mar 06 09:03 LAG2 17 0 53 3 +- 72 46 +- 64 2
7406 29 Mar 06 23:19 LAG2 5 0 85 -35 +-2564 49 +-1058 1
7406 30 Mar 06 02:49 LAG2 20 0 62 64 +- 70 22 +- 55 5
7406 30 Mar 06 03:40 LAG1 9 0 76 -73 +- 100 25 +- 84 9
7406 30 Mar 06 06:59 LAG1 10 0 74 126 +- 186 109 +- 140 2
7406 30 Mar 06 07:31 LAG2 10 0 53 -76 +- 297 72 +- 179 4
7406 31 Mar 06 05:13 LAG2 9 0 14 -30 +- 229 -19 +- 193 3
7406 31 Mar 06 05:39 LAG1 9 0 38 6 +- 300 24 +- 169 3
7406 31 Mar 06 23:27 LAG2 4 0 75 -31 +-1520 55 +- 792 4
7406 1 Apr 06 00:51 LAG1 3 0 41 -120 +-1678 -82 +-1731 0
7406 1 Apr 06 03:09 LAG2 18 0 74 64 +- 72 43 +- 62 5
7406 1 Apr 06 04:27 LAG1 13 0 82 -26 +- 85 55 +- 56 10
7406 1 Apr 06 07:31 LAG2 4 0 93 -64 +- 514 35 +- 607 2
7406 1 Apr 06 08:01 LAG1 1 0 127 0 +- 0 0 +- 0 0
7406 2 Apr 06 05:48 LAG2 1 0 23 0 +- 0 0 +- 0 0
7406 3 Apr 06 03:41 LAG2 17 0 75 51 +- 118 20 +- 87 2
7406 3 Apr 06 05:06 LAG1 14 0 103 9 +- 95 75 +- 66 7
7406 3 Apr 06 07:43 LAG2 17 0 97 -70 +- 83 85 +- 65 11
7406 3 Apr 06 08:37 LAG1 6 0 82 113 +- 177 187 +- 302 1
7406 4 Apr 06 01:21 LAG2 16 0 86 81 +- 75 17 +- 46 8
7406 4 Apr 06 03:39 LAG1 11 0 88 -45 +- 115 24 +- 56 16
7406 4 Apr 06 05:29 LAG2 27 0 65 -30 +- 57 32 +- 33 16
7406 4 Apr 06 07:15 LAG1 13 0 173 121 +- 83 116 +- 72 2
7406 4 Apr 06 23:21 LAG2 18 0 48 38 +- 78 36 +- 57 1

Station 7501 (Hartebeesthoek) (position fixed, acc. 10 mm)
7501 28 Mar 06 17:40 LAG2 4 0 35 10 +- 427 11 +- 194 0
7501 28 Mar 06 21:57 LAG1 7 0 44 -5 +- 103 -18 +- 48 2
7501 29 Mar 06 23:49 LAG1 6 0 4 2 +- 19 0 +- 13 2
7501 30 Mar 06 00:23 LAG2 5 0 30 47 +- 687 -7 +- 289 1
7501 1 Apr 06 19:37 LAG1 5 0 3 -2 +- 19 0 +- 15 2
7501 1 Apr 06 21:57 LAG2 9 0 8 15 +- 25 11 +- 24 1
7501 2 Apr 06 18:22 LAG1 6 0 5 -4 +- 17 -5 +- 41 2
7501 2 Apr 06 19:51 LAG2 13 0 17 17 +- 12 1 +- 12 1
7501 2 Apr 06 21:39 LAG1 19 0 4 0 +- 9 1 +- 4 3
7501 3 Apr 06 00:15 LAG2 6 0 15 12 +- 22 -4 +- 25 2
7501 3 Apr 06 01:21 LAG1 3 0 21 -20 +- 24 6 +- 60 1
7501 3 Apr 06 08:19 LAG1 4 0 16 30 +- 436 -5 +- 162 1
7501 3 Apr 06 14:01 LAG2 5 1 10 6 +- 32 -27 +- 76 6
7501 3 Apr 06 20:29 LAG1 10 0 14 -12 +- 16 -1 +- 8 3
7501 3 Apr 06 22:15 LAG2 7 0 23 16 +- 16 7 +- 10 3
7501 4 Apr 06 00:09 LAG1 6 0 9 8 +- 31 0 +- 23 1
7501 4 Apr 06 02:21 LAG2 14 0 9 1 +- 11 8 +- 10 3
7501 4 Apr 06 06:31 LAG1 14 0 8 10 +- 15 -2 +- 8 2
7501 4 Apr 06 15:55 LAG2 17 0 11 -3 +- 11 7 +- 7 2
7501 4 Apr 06 19:15 LAG1 5 0 11 1 +- 20 23 +- 57 6
7501 4 Apr 06 20:13 LAG2 8 1 14 8 +- 17 9 +- 21 5
7501 4 Apr 06 22:31 LAG1 16 0 6 0 +- 10 3 +- 6 2

Station 7810 (Zimmerwald 423) (position fixed, acc. 60 mm)
7810 29 Mar 06 14:53 LAG2 7 0 10 27 +- 474 -8 +- 233 2
7810 29 Mar 06 17:24 LAG1 17 0 17 -2 +- 44 11 +- 29 2
7810 29 Mar 06 20:43 LAG1 16 0 10 5 +- 46 -3 +- 19 3
7810 31 Mar 06 06:42 LAG2 13 0 30 22 +- 93 6 +- 64 1
7810 31 Mar 06 07:45 LAG1 3 0 18 26 +- 626 12 +- 885 0
7810 31 Mar 06 10:41 LAG2 5 0 37 22 +- 201 -15 +- 197 2
7810 31 Mar 06 11:19 LAG1 5 0 29 23 +- 385 27 +- 204 1
7810 31 Mar 06 21:41 LAG1 16 0 9 9 +- 45 -1 +- 27 1
7810 1 Apr 06 08:31 LAG2 17 0 26 26 +- 45 1 +- 30 5
7810 1 Apr 06 09:51 LAG1 8 0 14 50 +- 260 24 +- 139 6
7810 1 Apr 06 20:11 LAG1 6 0 38 36 +- 826 0 +- 306 4
7810 2 Apr 06 06:29 LAG2 19 0 20 18 +- 42 0 +- 27 7
7810 2 Apr 06 08:25 LAG1 9 0 33 36 +- 128 3 +- 105 4
7810 2 Apr 06 10:57 LAG2 5 0 36 29 +- 195 -9 +- 227 2
7810 2 Apr 06 12:13 LAG1 6 0 26 32 +- 132 8 +- 133 5
7810 3 Apr 06 09:11 LAG2 8 0 23 36 +- 132 -12 +- 99 1
7810 3 Apr 06 10:37 LAG1 9 0 25 27 +- 66 4 +- 30 6
7810 3 Apr 06 12:51 LAG2 10 0 22 22 +- 58 -1 +- 39 2
7810 4 Apr 06 06:59 LAG2 17 0 19 15 +- 48 4 +- 31 3
7810 4 Apr 06 11:13 LAG2 10 0 18 23 +- 78 -8 +- 41 5
7810 4 Apr 06 12:55 LAG1 16 0 18 16 +- 46 -5 +- 27 4
7810 4 Apr 06 16:22 LAG1 8 0 15 19 +- 93 7 +- 91 2

Station 7811 (Borowiec) (position fixed, acc. 60 mm)
7811 29 Mar 06 20:59 LAG1 7 0 30 21 +- 78 -2 +- 73 20

Station 7821 (Shanghai Observatory) (position solved, acc. 50 mm)
7821 28 Mar 06 14:50 LAG1 2 0 37 -39 +- 113 -45 +- 645 0
7821 29 Mar 06 13:18 LAG1 6 0 13 -2 +- 139 8 +- 109 4
7821 29 Mar 06 20:59 LAG2 4 0 46 0 +- 120 -112 +- 316 18
7821 30 Mar 06 12:11 LAG1 5 0 9 -8 +- 155 9 +- 155 8
7821 2 Apr 06 11:35 LAG1 7 0 12 3 +- 89 -8 +- 96 10
7821 2 Apr 06 15:09 LAG1 8 0 15 -24 +- 143 21 +- 94 8

Station 7824 (San Fernando) (position fixed, acc. 40 mm)
7824 28 Mar 06 00:00 LAG1 5 0 40 90 +- 348 -28 +- 192 2
7824 28 Mar 06 19:07 LAG1 9 0 15 35 +- 133 -24 +- 75 4
7824 28 Mar 06 22:09 LAG1 4 0 70 42 +- 63 -20 +- 28 4
7824 4 Apr 06 19:53 LAG1 3 0 14 7 +- 442 -6 +- 422 3

Station 7825 (Mount Stromlo) (position solved, acc. 10 mm)
7825 28 Mar 06 05:50 LAG2 16 0 12 -1 +- 10 10 +- 9 5
7825 28 Mar 06 09:41 LAG2 9 0 12 14 +- 72 1 +- 35 1
7825 29 Mar 06 11:57 LAG2 11 0 26 1 +- 12 -18 +- 9 8
7825 29 Mar 06 12:34 LAG1 3 0 3 3 +- 238 4 +- 142 1
7825 30 Mar 06 18:07 LAG1 5 0 61 37 +- 43 -24 +- 41 4
7825 30 Mar 06 18:19 LAG2 19 0 4 2 +- 9 1 +- 7 3
7825 30 Mar 06 21:26 LAG1 11 1 15 0 +- 14 -10 +- 10 3
7825 31 Mar 06 00:57 LAG1 9 0 6 -4 +- 14 1 +- 15 4
7825 31 Mar 06 08:31 LAG2 1 0 20 0 +- 0 0 +- 0 0
7825 31 Mar 06 16:38 LAG2 4 0 2 -1 +- 23 -3 +- 36 1
7825 31 Mar 06 23:39 LAG1 2 0 12 -29 +- 320 -16 +- 305 0
7825 1 Apr 06 06:11 LAG2 14 0 20 7 +- 11 14 +- 8 6
7825 1 Apr 06 10:11 LAG2 26 0 6 -2 +- 8 2 +- 5 4
7825 1 Apr 06 11:57 LAG1 14 0 5 -4 +- 11 0 +- 7 3
7825 1 Apr 06 14:29 LAG2 24 0 6 -3 +- 8 3 +- 5 3
7825 1 Apr 06 15:28 LAG1 16 0 6 1 +- 10 -3 +- 7 2
7825 1 Apr 06 22:25 LAG1 10 1 7 0 +- 27 -2 +- 18 6
7825 2 Apr 06 02:02 LAG1 8 0 7 -1 +- 53 2 +- 35 6
7825 2 Apr 06 04:31 LAG2 11 0 16 13 +- 12 10 +- 20 7
7825 2 Apr 06 08:15 LAG2 18 0 13 8 +- 10 -3 +- 6 5
7825 2 Apr 06 10:43 LAG1 8 0 7 3 +- 15 -2 +- 21 6
7825 2 Apr 06 12:35 LAG2 5 0 18 7 +- 18 -11 +- 13 5
7825 2 Apr 06 14:05 LAG1 12 0 24 -29 +- 16 -6 +- 9 5
7825 2 Apr 06 17:17 LAG2 4 0 15 -14 +- 392 0 +- 184 1
7825 2 Apr 06 20:51 LAG1 16 0 9 1 +- 10 -5 +- 8 4
7825 3 Apr 06 00:25 LAG1 3 0 10 -2 +- 37 7 +- 33 1
7825 3 Apr 06 06:25 LAG2 6 0 11 8 +- 17 1 +- 8 7
7825 3 Apr 06 23:14 LAG1 10 0 5 -8 +- 35 5 +- 18 3
7825 4 Apr 06 02:48 LAG1 5 0 15 -12 +- 44 39 +- 69 4
7825 4 Apr 06 08:27 LAG2 13 0 15 16 +- 24 0 +- 13 4
7825 4 Apr 06 12:50 LAG2 15 0 6 0 +- 10 0 +- 9 6
7825 4 Apr 06 15:09 LAG1 6 0 13 -12 +- 23 -1 +- 30 2
7825 4 Apr 06 17:27 LAG2 7 0 6 0 +- 141 -2 +- 69 2
7825 4 Apr 06 21:40 LAG1 17 0 9 -3 +- 11 6 +- 7 3

Station 7832 (Riyad) (position solved, acc. 20 mm)
7832 3 Apr 06 17:33 LAG1 9 0 7 -13 +- 46 6 +- 26 3
7832 3 Apr 06 20:55 LAG1 11 0 18 18 +- 20 -5 +- 25 3
7832 3 Apr 06 22:57 LAG2 13 0 5 4 +- 19 -3 +- 29 2
7832 4 Apr 06 03:01 LAG2 15 0 10 -7 +- 17 8 +- 17 3
7832 4 Apr 06 16:11 LAG1 10 0 11 4 +- 35 5 +- 29 3
7832 4 Apr 06 19:35 LAG1 11 0 10 -9 +- 24 0 +- 19 3

Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm)
7838 28 Mar 06 11:03 LAG1 19 0 41 34 +- 22 9 +- 13 6
7838 28 Mar 06 14:47 LAG1 11 0 6 1 +- 40 -2 +- 37 6
7838 29 Mar 06 09:43 LAG1 18 0 37 14 +- 22 24 +- 16 5
7838 29 Mar 06 13:08 LAG1 22 0 40 30 +- 20 11 +- 10 5
7838 30 Mar 06 11:50 LAG1 11 0 29 36 +- 37 18 +- 27 7
7838 31 Mar 06 00:15 LAG1 7 0 83 107 +- 148 17 +- 99 8
7838 31 Mar 06 04:19 LAG1 5 0 15 14 +- 537 0 +- 219 1
7838 31 Mar 06 10:40 LAG1 12 0 50 17 +- 36 26 +- 26 10
7838 31 Mar 06 14:09 LAG1 13 0 43 14 +- 31 27 +- 24 7
7838 2 Apr 06 14:55 LAG1 10 0 30 20 +- 32 16 +- 35 8
7838 3 Apr 06 09:59 LAG1 17 0 74 71 +- 23 6 +- 16 6
7838 3 Apr 06 13:23 LAG1 20 0 50 42 +- 21 15 +- 12 3

Station 7839 (Graz) (position fixed, acc. 10 mm)
7839 28 Mar 06 15:18 LAG1 6 0 24 13 +- 30 -8 +- 22 1
7839 29 Mar 06 10:32 LAG2 9 0 4 3 +- 17 -3 +- 11 1
7839 29 Mar 06 13:59 LAG1 9 0 26 -7 +- 23 14 +- 17 1
7839 29 Mar 06 14:29 LAG2 4 0 8 4 +- 91 -2 +- 68 0
7839 29 Mar 06 17:31 LAG1 12 0 11 -9 +- 17 9 +- 10 2
7839 29 Mar 06 20:52 LAG1 8 0 10 -6 +- 16 -2 +- 8 4
7839 30 Mar 06 08:41 LAG2 3 0 1 0 +- 38 0 +- 147 1
7839 31 Mar 06 14:41 LAG2 2 0 12 -1 +- 172 -10 +- 120 0
7839 31 Mar 06 18:13 LAG1 15 0 16 -3 +- 12 8 +- 6 3
7839 31 Mar 06 21:36 LAG1 13 0 5 -5 +- 11 0 +- 6 2
7839 4 Apr 06 02:59 LAG2 20 0 13 -6 +- 9 9 +- 7 1
7839 4 Apr 06 07:07 LAG2 18 0 9 2 +- 12 4 +- 8 0
7839 4 Apr 06 09:25 LAG1 2 0 0 11 +- 554 8 +- 397 0
7839 4 Apr 06 10:57 LAG2 15 0 16 9 +- 20 -4 +- 11 0
7839 4 Apr 06 15:09 LAG2 4 0 5 -16 +- 91 -12 +- 94 0
7839 4 Apr 06 16:23 LAG1 3 0 3 3 +- 30 3 +- 29 0
7839 4 Apr 06 19:35 LAG1 18 0 7 -6 +- 10 0 +- 4 3

Station 7840 (Herstmonceux) (position fixed, acc. 20 mm)
7840 28 Mar 06 15:25 LAG1 15 0 23 17 +- 17 -12 +- 12 2
7840 28 Mar 06 16:23 LAG2 9 0 27 -27 +- 25 0 +- 36 1
7840 31 Mar 06 14:32 LAG2 7 0 14 0 +- 69 -9 +- 48 1
7840 31 Mar 06 14:49 LAG1 9 0 20 7 +- 42 17 +- 28 2
7840 1 Apr 06 10:01 LAG1 8 0 18 19 +- 24 6 +- 36 2
7840 1 Apr 06 12:35 LAG2 20 0 13 9 +- 14 -6 +- 9 4
7840 1 Apr 06 13:39 LAG1 13 0 8 9 +- 25 -1 +- 15 2
7840 1 Apr 06 16:59 LAG1 15 0 20 20 +- 17 -3 +- 12 4
7840 1 Apr 06 20:27 LAG1 14 0 11 2 +- 19 -6 +- 10 2
7840 2 Apr 06 18:59 LAG1 19 0 18 16 +- 15 -1 +- 8 5
7840 2 Apr 06 22:31 LAG1 17 0 5 2 +- 16 2 +- 9 1

Station 7841 (Potsdam) (position solved, acc. 10 mm)
7841 28 Mar 06 04:29 LAG2 10 0 4 3 +- 23 -3 +- 22 3
7841 28 Mar 06 22:21 LAG1 7 0 31 0 +- 40 -26 +- 32 2
7841 31 Mar 06 21:47 LAG1 9 0 8 -2 +- 21 2 +- 19 7
7841 3 Apr 06 04:51 LAG2 13 0 10 -2 +- 14 7 +- 13 2
7841 4 Apr 06 12:59 LAG1 11 0 5 2 +- 13 -4 +- 11 2
7841 4 Apr 06 16:15 LAG1 14 0 9 4 +- 12 0 +- 8 8
7841 4 Apr 06 19:41 LAG1 21 0 6 -3 +- 9 -2 +- 4 3

Station 7941 (Matera) (position solved, acc. 10 mm)
7941 28 Mar 06 04:09 LAG2 6 0 3 -4 +- 63 -6 +- 52 0
7941 28 Mar 06 15:21 LAG1 3 0 29 -2 +- 167 -23 +- 124 0
7941 29 Mar 06 02:17 LAG2 17 0 9 7 +- 10 5 +- 11 3
7941 29 Mar 06 06:11 LAG2 19 0 10 1 +- 9 -7 +- 7 2
7941 29 Mar 06 21:13 LAG1 6 0 19 0 +- 118 -8 +- 54 1
7941 30 Mar 06 04:11 LAG2 17 0 16 5 +- 14 13 +- 10 0
7941 30 Mar 06 16:09 LAG1 13 0 22 23 +- 12 -3 +- 11 2
7941 30 Mar 06 19:21 LAG1 19 0 23 -7 +- 9 -11 +- 5 3
7941 31 Mar 06 06:27 LAG2 35 35 0 0 +- 0 0 +- 0 0
7941 31 Mar 06 10:49 LAG2 14 0 19 0 +- 12 -13 +- 9 1
7941 31 Mar 06 11:25 LAG1 5 0 26 11 +- 53 30 +- 44 0
7941 31 Mar 06 18:05 LAG1 20 0 9 -4 +- 9 5 +- 5 2
7941 31 Mar 06 21:49 LAG1 14 0 8 0 +- 17 -5 +- 11 2
7941 3 Apr 06 10:49 LAG1 5 0 5 21 +- 69 13 +- 45 0
7941 3 Apr 06 17:33 LAG1 18 0 3 -2 +- 9 -1 +- 6 1
7941 3 Apr 06 21:13 LAG1 12 0 12 10 +- 15 -11 +- 11 2
7941 4 Apr 06 02:49 LAG2 22 0 5 0 +- 8 2 +- 6 4
7941 4 Apr 06 09:17 LAG1 7 0 5 -9 +- 104 -2 +- 47 4
7941 4 Apr 06 11:01 LAG2 13 0 11 3 +- 14 -4 +- 7 3
7941 4 Apr 06 12:51 LAG1 12 0 5 -1 +- 16 -3 +- 11 4
7941 4 Apr 06 16:17 LAG1 16 0 11 -8 +- 10 6 +- 8 1
7941 4 Apr 06 19:33 LAG1 24 0 4 -3 +- 8 -1 +- 4 2
7941 4 Apr 06 23:33 LAG1 7 0 7 8 +- 33 -1 +- 46 1

Station 8834 (Wettzell) (position fixed, acc. 10 mm)
8834 29 Mar 06 10:54 LAG2 3 0 23 -45 +- 260 11 +- 127 2
8834 29 Mar 06 21:03 LAG1 5 0 26 -25 +- 21 1 +- 13 7
--------------------------------------------------------------------------------



Distribution of daytime, nighttime and twilight passes since Jan 1, 2003:
--------------------------------------------------------------------------
Station System Period Number of Passes
LAGEOS-1 LAGEOS-2
Day/Night/Twil. Day/Night/Twil. Total
--------------------------------------------------------------------------
1824 KIEVLA 051005 - 051102 0/ 9/ 0 0/ 3/ 0 12
1831 LVIL 050703 - 051103 0/ 68/ 0 0/ 15/ 0 83
1864 MD2LAS 050701 - 060405 0/157/ 0 0/ 67/ 0 224
1873 SIMLAS 050701 - 060405 0/ 68/ 0 0/ 15/ 0 83
1884 RIGLAS 050703 - 060329 0/128/ 1 0/ 31/ 0 160
1893 CRMLAS 050723 - 060402 0/ 25/ 0 0/ 0/ 0 25
6405 TIGO 050705 - 060309 72/ 60/ 4 59/ 80/ 14 289
6810 ZIMLAT 050701 - 060406 166/299/ 29 204/166/ 26 890
7080 MLRS25 050701 - 060402 7/119/ 2 11/ 93/ 3 235
7090 ML0514 050701 - 060405 328/283/ 43 236/364/ 34 1288
7105 ML0725 050704 - 060405 21/162/ 13 27/ 78/ 9 310
7110 ML0414 050701 - 060404 66/235/ 34 85/122/ 14 556
7124 ML0819 050818 - 060405 1/ 32/ 2 1/ 42/ 1 79
7130 TL04** 050803 - 060316 17/ 35/ 1 15/ 15/ 4 87
7231 WUHA01 051130 - 051130 0/ 1/ 0 0/ 0/ 0 1
7237 CHALAS 050410 - 060405 0/291/ 2 0/176/ 0 469
7249 BEJLAS 050703 - 060330 0/152/ 0 0/ 82/ 0 234
7308 CRLLAS 060110 - 060325 4/ 13/ 0 4/ 12/ 0 33
7355 TROS02 050701 - 050906 0/ 24/ 0 0/ 0/ 0 24
7358 GMSL 050802 - 060304 8/ 26/ 0 3/ 14/ 0 51
7405 TIGO 050705 - 060302 2/ 15/ 0 0/ 14/ 0 31
7406 060223 - 060405 0/ 64/ 0 0/ 69/ 0 133
7501 ML0616 050701 - 060405 36/ 75/ 6 18/ 97/ 7 239
7810 ZIMLAT 050701 - 060406 166/299/ 29 204/164/ 25 887
7811 POLLAS 050704 - 060329 0/114/ 0 0/ 28/ 0 142
7821 CHILAS 051213 - 060402 0/ 16/ 0 0/ 16/ 0 32
7824 SPNLAS 050701 - 060404 10/200/ 8 10/108/ 8 344
7825 STL3 050702 - 060406 380/187/ 30 219/280/ 32 1128
7832 SALRO 050702 - 060404 137/308/ 28 165/217/ 26 881
7835 GRASSE 050701 - 050705 0/ 3/ 0 0/ 2/ 0 5
7838 SHOLAS 050714 - 060403 49/167/ 9 54/123/ 8 410
7839 AUSLAS 050702 - 060404 105/198/ 26 146/ 85/ 9 569
7840 RGOLAS 050702 - 060402 123/295/ 35 159/132/ 19 763
7841 GFZLA3 050713 - 060406 18/133/ 12 19/ 54/ 8 244
7848 FTLR06 050515 - 051027 6/ 48/ 2 5/ 22/ 4 87
7941 MLROnn 050701 - 060405 86/194/ 14 105/ 93/ 17 509
8834 WLRS01 050702 - 060329 126/214/ 30 151/113/ 20 654
--------------------------------------------------------------------------


C. EARTH ROTATION PARAMETER SOLUTIONS FOR IERS

The following solutions for the polar motion and the UT1-UTC time difference
were also obtained in the 10-day data arc analysis described in the previous
section. Only solutions submitted to IERS are presented here.

--------------------------------------------------------------
DATE X Y UT1-UTC
(YYMMDD.D) (MAS) (MAS) (MS)
--------------------------------------------------------------
060329.0 100.8 +/- 0.1 376.5 +/- 0.1 285.25 +/- 0.02
060330.0 101.0 +/- 0.1 375.9 +/- 0.1 283.75 +/- 0.03
060331.0 102.7 +/- 0.1 375.6 +/- 0.1 282.44 +/- 0.04
060401.0 102.4 +/- 0.1 374.7 +/- 0.2 281.53 +/- 0.05
060402.0 103.4 +/- 0.1 374.4 +/- 0.1 280.77 +/- 0.05
060403.0 103.6 +/- 0.1 373.6 +/- 0.1 280.36 +/- 0.05
060404.0 103.7 +/- 0.1 373.4 +/- 0.1 280.11 +/- 0.06
--------------------------------------------------------------



From: Ron Noomen

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