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SLR-Report No.6942

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Date:2006-04-04 13:15:00
Sender:Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>>
Subject:[SLR-Report] No. 6942: Delft QL Report April 04, 2006
Author:Ron Noomen
Content:********************************************************************************
SLR Electronic Report 2006-04-04 13:15:00 UTC Message No. 6942
********************************************************************************

Author: Ron Noomen
Subject: Delft QL Report April 04, 2006


WEGENER-2 IERS

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


April 3, 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 Mon, Apr 3, 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 Mon,
Apr 3, 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) 060402 - 060403 3 -
1873 Simeiz, Crimea, Ukraine 060402 - 060403 1 1
1893 Kazivili, Crimea, Ukraine 060402 - 060402 1 -
6810 Zimmerwald 846, Switzerland 060401 - 060404 5 5
7080 McDonald Obs., Fort Davis, TX 060402 - 060402 2 1
7090 Yarragadee, Australia 060401 - 060403 5 2
7105 Greenbelt, Maryland 060401 - 060402 3 -
7124 Papeete, Tahiti 060403 - 060403 - 1
7406 San Juan, Argentina 060402 - 060404 4 5
7501 Hartebeesthoek, SA (MOB-6) 060401 - 060403 4 3
7810 Zimmerwald 423, Switzerland 060401 - 060404 5 5
7821 Shanghai Observatory, China 060402 - 060402 2 -
7825 Mount Stromlo, Australia 060401 - 060403 9 8
7832 Riyad, Saudi Arabia 060403 - 060404 2 2
7838 Simosato Observatory, Japan 060402 - 060403 2 -
7839 Graz, Austria 060331 - 060331 2 1
7840 Herstmonceux, United Kingdom 060401 - 060402 6 1
7841 Potsdam, Germany 060403 - 060403 - 1
7941 Matera, Italy (MLRO 532) 060403 - 060404 4 1
------ ------ --- ---
TOTAL 060331 - 060404 60 37
------------------------------------------------------------------------------


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 Sun, Mar 26, 2006 to Mon, Apr 3, 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 25 16
Number of Passes 171/171 105/105
Number of Normal Points 1682/1660 1315/1304
Weighted RMS of Fit (mm) 19 14
-----------------------------------------------------------------------


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 27 Mar 06 16:15 LAG1 10 0 68 -64 +- 189 0 +- 139 20
1864 2 Apr 06 15:09 LAG1 11 0 35 -27 +- 183 1 +- 101 23
1864 2 Apr 06 18:57 LAG1 4 0 47 -64 +- 682 38 +-1060 16

Station 1873 (Simeiz) (position fixed, acc. 200 mm)
1873 28 Mar 06 19:02 LAG1 4 0 61 166 +-2325 -54 +-1004 42
1873 31 Mar 06 21:48 LAG1 5 0 27 10 +- 270 -8 +- 581 24
1873 2 Apr 06 18:48 LAG1 8 0 193 232 +- 441 30 +- 280 17

Station 1884 (Riga) (position fixed, acc. 100 mm)
1884 26 Mar 06 17:57 LAG1 17 0 24 23 +- 73 0 +- 44 6
1884 29 Mar 06 17:27 LAG1 15 0 19 -3 +- 82 12 +- 53 5
1884 29 Mar 06 21:09 LAG1 8 0 7 5 +- 139 0 +- 156 4

Station 1893 (Kazivili) (position fixed, acc. 100 mm)
1893 26 Mar 06 17:44 LAG1 10 0 42 7 +- 95 31 +- 78 18
1893 31 Mar 06 18:01 LAG1 11 0 56 80 +- 134 44 +- 88 13
1893 2 Apr 06 18:49 LAG1 8 0 20 34 +- 291 26 +- 168 7

Station 6810 (Zimmerwald 846) (position fixed, acc. 60 mm)
6810 26 Mar 06 10:53 LAG1 7 0 13 24 +- 177 7 +- 78 7
6810 26 Mar 06 11:53 LAG2 26 0 22 2 +- 35 -11 +- 20 9
6810 26 Mar 06 14:33 LAG1 15 0 25 24 +- 47 0 +- 30 4
6810 26 Mar 06 16:35 LAG2 4 0 18 -9 +-1431 -4 +- 758 1
6810 27 Mar 06 05:47 LAG2 24 0 8 -5 +- 41 -3 +- 26 5
6810 27 Mar 06 09:45 LAG1 7 0 11 -5 +- 70 6 +- 53 2
6810 27 Mar 06 10:18 LAG2 7 0 13 14 +- 106 -2 +- 96 4
6810 29 Mar 06 14:53 LAG2 8 0 16 -5 +- 439 -5 +- 210 1
6810 29 Mar 06 17:24 LAG1 18 0 19 -10 +- 43 11 +- 27 2
6810 29 Mar 06 20:42 LAG1 18 0 6 -1 +- 43 -2 +- 18 3
6810 31 Mar 06 06:41 LAG2 14 0 11 4 +- 79 5 +- 56 3
6810 31 Mar 06 07:45 LAG1 4 0 20 21 +- 168 0 +- 273 2
6810 31 Mar 06 10:41 LAG2 6 0 21 8 +- 163 -13 +- 173 3
6810 31 Mar 06 11:19 LAG1 6 0 36 34 +- 309 38 +- 171 1
6810 31 Mar 06 21:41 LAG1 16 0 7 -6 +- 45 0 +- 26 3
6810 1 Apr 06 08:31 LAG2 22 0 12 11 +- 39 3 +- 24 4
6810 1 Apr 06 09:51 LAG1 11 0 168 -151 +- 62 -82 +- 31 50*CHK*
6810 1 Apr 06 20:09 LAG1 7 0 32 57 +- 721 9 +- 262 5
6810 2 Apr 06 06:29 LAG2 23 0 20 9 +- 39 9 +- 24 5
6810 2 Apr 06 08:23 LAG1 10 0 12 9 +- 122 -1 +- 92 5
6810 2 Apr 06 10:41 LAG2 7 1 36 39 +- 127 6 +- 165 7
6810 2 Apr 06 12:11 LAG1 6 0 21 14 +- 169 -5 +- 131 5

Station 7080 (McDonald Obs.) (position fixed, acc. 20 mm)
7080 30 Mar 06 04:15 LAG1 15 0 19 17 +- 17 7 +- 10 3
7080 30 Mar 06 11:41 LAG2 17 0 9 -8 +- 17 0 +- 14 5
7080 31 Mar 06 03:10 LAG1 5 0 15 -19 +- 48 10 +- 65 6
7080 31 Mar 06 06:29 LAG1 16 0 13 -4 +- 16 10 +- 13 2
7080 2 Apr 06 03:41 LAG1 18 0 10 8 +- 15 -1 +- 9 4
7080 2 Apr 06 07:35 LAG1 6 0 14 15 +- 83 0 +- 86 2
7080 2 Apr 06 10:03 LAG2 6 0 38 -38 +- 30 0 +- 39 1

Station 7090 (Yarragadee) (position fixed, acc. 10 mm)
7090 26 Mar 06 01:07 LAG1 4 0 16 9 +- 122 4 +- 77 0
7090 26 Mar 06 04:27 LAG1 11 0 7 -9 +- 17 9 +- 16 1
7090 26 Mar 06 09:25 LAG2 13 0 11 11 +- 11 -3 +- 9 2
7090 26 Mar 06 13:29 LAG1 11 0 5 -7 +- 18 4 +- 19 1
7090 26 Mar 06 13:51 LAG2 12 0 7 -5 +- 47 0 +- 28 2
7090 26 Mar 06 16:45 LAG1 21 0 19 -11 +- 9 -7 +- 5 5
7090 26 Mar 06 17:35 LAG2 6 0 3 -12 +- 183 -5 +- 87 3
7090 26 Mar 06 20:21 LAG1 9 0 5 -1 +- 16 -5 +- 24 2
7090 26 Mar 06 21:45 LAG2 21 0 3 0 +- 9 1 +- 8 3
7090 26 Mar 06 23:27 LAG1 10 0 11 -9 +- 18 1 +- 18 1
7090 27 Mar 06 02:53 LAG1 19 0 28 -4 +- 9 17 +- 5 2
7090 29 Mar 06 00:17 LAG1 3 0 28 -46 +- 125 -14 +- 104 0
7090 29 Mar 06 03:41 LAG1 8 0 18 -3 +- 15 13 +- 10 2
7090 29 Mar 06 08:11 LAG2 2 0 21 -154 +-1511 115 +- 995 0
7090 29 Mar 06 11:45 LAG2 22 0 20 7 +- 9 -14 +- 6 2
7090 29 Mar 06 12:49 LAG1 4 0 13 -11 +- 74 3 +- 116 2
7090 29 Mar 06 20:01 LAG1 4 0 5 1 +- 115 3 +- 97 1
7090 29 Mar 06 20:09 LAG2 19 0 12 -7 +- 9 -5 +- 6 3
7090 29 Mar 06 23:08 LAG1 6 0 9 -15 +- 31 11 +- 40 1
7090 30 Mar 06 02:35 LAG1 3 0 5 -10 +- 53 16 +- 101 0
7090 30 Mar 06 09:53 LAG2 21 0 14 7 +- 11 5 +- 6 1
7090 30 Mar 06 13:57 LAG2 11 0 5 5 +- 17 0 +- 17 0
7090 30 Mar 06 14:49 LAG1 9 0 27 -26 +- 15 -12 +- 7 4
7090 30 Mar 06 18:11 LAG2 9 0 5 8 +- 46 1 +- 29 0
7090 30 Mar 06 18:27 LAG1 11 0 24 19 +- 12 -16 +- 13 1
7090 1 Apr 06 19:07 LAG2 5 0 15 38 +- 476 -9 +- 199 3
7090 1 Apr 06 19:23 LAG1 6 0 20 29 +- 40 -12 +- 46 1
7090 1 Apr 06 22:21 LAG1 16 0 6 5 +- 10 1 +- 9 3
7090 2 Apr 06 20:33 LAG2 22 0 3 3 +- 9 -1 +- 7 1
7090 2 Apr 06 21:15 LAG1 8 0 5 -5 +- 15 -2 +- 30 0

Station 7105 (Greenbelt) (position fixed, acc. 10 mm)
7105 27 Mar 06 04:51 LAG1 8 0 7 12 +- 28 13 +- 25 1
7105 27 Mar 06 23:59 LAG1 17 0 2 -2 +- 10 1 +- 7 1
7105 28 Mar 06 03:27 LAG1 11 0 13 7 +- 15 12 +- 12 1
7105 30 Mar 06 00:39 LAG1 21 0 7 -7 +- 9 1 +- 5 1
7105 30 Mar 06 04:39 LAG1 7 0 17 11 +- 90 3 +- 47 1
7105 30 Mar 06 23:49 LAG1 5 0 38 -25 +- 117 -6 +- 63 0
7105 1 Apr 06 21:01 LAG1 3 0 2 -3 +- 45 -4 +- 152 0
7105 2 Apr 06 00:11 LAG1 17 0 18 -16 +- 10 -3 +- 6 1
7105 2 Apr 06 19:38 LAG1 10 0 8 7 +- 20 -7 +- 13 2

Station 7110 (Monument Peak) (position fixed, acc. 10 mm)
7110 26 Mar 06 01:41 LAG2 7 0 15 21 +- 28 -10 +- 38 3
7110 28 Mar 06 23:05 LAG1 9 0 9 -5 +- 14 -9 +- 19 4
7110 28 Mar 06 23:41 LAG2 5 0 7 32 +- 132 18 +- 66 3

Station 7124 (Papeete) (position fixed, acc. 10 mm)
7124 28 Mar 06 06:51 LAG1 11 0 10 9 +- 12 7 +- 16 1
7124 28 Mar 06 10:14 LAG1 6 0 11 23 +- 75 6 +- 40 3
7124 28 Mar 06 10:36 LAG2 11 0 11 -1 +- 12 11 +- 13 2
7124 29 Mar 06 08:32 LAG2 3 0 5 0 +- 144 -9 +- 261 0
7124 30 Mar 06 06:43 LAG2 7 0 4 -2 +- 67 5 +- 57 2
7124 30 Mar 06 07:29 LAG1 11 0 33 58 +- 26 20 +- 16 3
7124 30 Mar 06 11:06 LAG1 10 0 23 -21 +- 13 3 +- 14 8
7124 31 Mar 06 09:41 LAG1 7 0 15 1 +- 55 8 +- 30 2

Station 7237 (Changchun) (position fixed, acc. 50 mm)
7237 28 Mar 06 14:56 LAG1 2 0 18 15 +- 110 -24 +- 381 0
7237 29 Mar 06 13:21 LAG1 4 0 13 76 +- 619 42 +- 315 3
7237 30 Mar 06 11:53 LAG1 15 0 87 87 +- 40 3 +- 21 17

Station 7249 (Beijing) (position solved, acc. 50 mm)
7249 27 Mar 06 12:31 LAG1 11 0 23 11 +- 74 5 +- 48 21
7249 28 Mar 06 11:33 LAG1 3 0 41 72 +- 460 -85 +- 405 29
7249 28 Mar 06 14:59 LAG1 5 0 20 37 +- 151 -28 +- 149 10
7249 29 Mar 06 13:30 LAG1 2 0 75 -392 +- 564 -500 +- 730 0
7249 30 Mar 06 15:37 LAG1 7 0 48 17 +- 85 41 +- 110 43

Station 7406 (San Juan) (position solved, acc. 100 mm)
7406 26 Mar 06 01:51 LAG1 11 0 98 -138 +- 227 -31 +- 157 6
7406 26 Mar 06 02:15 LAG2 28 0 84 64 +- 56 39 +- 39 9
7406 26 Mar 06 05:28 LAG1 12 0 95 28 +- 107 81 +- 80 2
7406 26 Mar 06 06:33 LAG2 24 0 84 -22 +- 61 53 +- 39 9
7406 26 Mar 06 08:55 LAG1 6 0 69 136 +- 242 167 +- 316 2
7406 27 Mar 06 00:19 LAG2 23 0 59 35 +- 62 27 +- 35 3
7406 27 Mar 06 03:59 LAG1 13 0 95 -63 +- 206 16 +- 99 5
7406 27 Mar 06 04:31 LAG2 30 0 24 23 +- 54 -2 +- 35 3
7406 27 Mar 06 07:34 LAG1 8 0 78 150 +- 205 126 +- 187 1
7406 27 Mar 06 08:43 LAG2 25 0 78 -25 +- 60 49 +- 40 14
7406 28 Mar 06 02:31 LAG2 9 0 56 71 +- 129 20 +- 75 2
7406 28 Mar 06 02:49 LAG1 11 0 123 -112 +- 98 20 +- 97 8
7406 29 Mar 06 00:29 LAG2 23 0 59 53 +- 66 32 +- 42 4
7406 29 Mar 06 01:19 LAG1 14 0 101 -107 +- 85 -37 +- 70 12
7406 29 Mar 06 04:49 LAG1 13 0 95 3 +- 157 52 +- 84 4
7406 29 Mar 06 05:15 LAG2 13 0 22 4 +- 163 13 +- 119 2
7406 29 Mar 06 08:21 LAG1 7 0 74 138 +- 230 166 +- 252 1
7406 29 Mar 06 09:03 LAG2 17 0 57 -5 +- 72 50 +- 64 3
7406 29 Mar 06 23:19 LAG2 5 0 86 -23 +-2564 45 +-1058 1
7406 30 Mar 06 02:49 LAG2 20 0 73 77 +- 70 26 +- 55 7
7406 30 Mar 06 03:40 LAG1 9 0 65 -58 +- 100 31 +- 84 9
7406 30 Mar 06 06:59 LAG1 11 0 84 116 +- 149 110 +- 117 2
7406 30 Mar 06 07:31 LAG2 10 0 56 -66 +- 297 69 +- 179 3
7406 31 Mar 06 05:13 LAG2 9 0 11 -12 +- 229 -17 +- 193 3
7406 31 Mar 06 05:39 LAG1 9 0 33 4 +- 300 21 +- 169 3
7406 31 Mar 06 23:27 LAG2 4 0 55 -24 +-1520 41 +- 792 4
7406 1 Apr 06 00:51 LAG1 3 0 35 -102 +-1678 -70 +-1731 0
7406 1 Apr 06 03:09 LAG2 18 0 66 58 +- 72 38 +- 62 4
7406 1 Apr 06 04:27 LAG1 13 0 88 -18 +- 85 59 +- 56 9
7406 1 Apr 06 07:31 LAG2 4 0 87 -57 +- 514 35 +- 607 2
7406 1 Apr 06 08:01 LAG1 2 0 142 116 +- 359 206 +-2464 0
7406 2 Apr 06 05:48 LAG2 1 0 19 0 +- 0 0 +- 0 0

Station 7501 (Hartebeesthoek) (position fixed, acc. 10 mm)
7501 26 Mar 06 16:49 LAG2 23 0 9 0 +- 8 5 +- 5 2
7501 26 Mar 06 20:37 LAG1 12 0 6 -9 +- 19 -2 +- 11 2
7501 26 Mar 06 21:35 LAG2 9 0 21 19 +- 60 1 +- 43 1
7501 27 Mar 06 00:29 LAG1 6 0 9 -13 +- 33 13 +- 24 2
7501 27 Mar 06 01:21 LAG2 11 0 12 4 +- 14 4 +- 6 4
7501 28 Mar 06 17:40 LAG2 4 0 28 12 +- 427 7 +- 194 0
7501 28 Mar 06 21:57 LAG1 7 0 32 2 +- 103 -15 +- 48 2
7501 29 Mar 06 23:49 LAG1 6 0 7 -4 +- 19 5 +- 13 2
7501 30 Mar 06 00:23 LAG2 5 0 29 70 +- 687 -17 +- 289 1
7501 1 Apr 06 19:37 LAG1 5 0 3 0 +- 19 -1 +- 15 2
7501 1 Apr 06 21:57 LAG2 9 0 8 13 +- 25 14 +- 24 1
7501 2 Apr 06 18:22 LAG1 6 0 6 5 +- 17 -3 +- 41 2
7501 2 Apr 06 19:51 LAG2 13 0 11 10 +- 12 9 +- 12 2
7501 2 Apr 06 21:39 LAG1 19 0 6 2 +- 9 2 +- 4 2

Station 7810 (Zimmerwald 423) (position fixed, acc. 60 mm)
7810 26 Mar 06 10:53 LAG1 6 0 21 53 +- 247 15 +- 101 3
7810 26 Mar 06 11:55 LAG2 22 0 28 18 +- 39 -10 +- 23 8
7810 26 Mar 06 14:35 LAG1 13 0 35 35 +- 50 0 +- 35 4
7810 27 Mar 06 05:49 LAG2 23 0 5 2 +- 41 -2 +- 27 3
7810 27 Mar 06 09:45 LAG1 6 0 4 0 +- 121 4 +- 133 1
7810 27 Mar 06 10:18 LAG2 7 0 21 22 +- 106 -1 +- 96 4
7810 29 Mar 06 14:53 LAG2 7 0 4 15 +- 474 -8 +- 233 2
7810 29 Mar 06 17:24 LAG1 17 0 18 -1 +- 44 12 +- 29 2
7810 29 Mar 06 20:43 LAG1 16 0 9 7 +- 46 0 +- 19 4
7810 31 Mar 06 06:42 LAG2 13 0 21 17 +- 93 3 +- 64 1
7810 31 Mar 06 07:45 LAG1 3 0 29 42 +- 626 18 +- 885 0
7810 31 Mar 06 10:41 LAG2 5 0 30 15 +- 201 -15 +- 197 2
7810 31 Mar 06 11:19 LAG1 5 0 30 20 +- 385 26 +- 204 1
7810 31 Mar 06 21:41 LAG1 16 0 2 1 +- 45 0 +- 27 1
7810 1 Apr 06 08:31 LAG2 17 0 21 20 +- 45 3 +- 30 5
7810 1 Apr 06 09:51 LAG1 10 0 173 -154 +- 65 -82 +- 32 47*CHK*
7810 1 Apr 06 20:11 LAG1 6 0 41 34 +- 826 -2 +- 306 4
7810 2 Apr 06 06:29 LAG2 19 0 22 16 +- 42 7 +- 27 7
7810 2 Apr 06 08:25 LAG1 9 0 22 16 +- 128 -4 +- 105 4
7810 2 Apr 06 10:40 LAG2 6 1 34 30 +- 195 -5 +- 227 2
7810 2 Apr 06 12:13 LAG1 6 0 27 26 +- 132 0 +- 133 5

Station 7811 (Borowiec) (position fixed, acc. 60 mm)
7811 29 Mar 06 20:59 LAG1 7 0 34 28 +- 78 0 +- 73 20

Station 7821 (Shanghai Observatory) (position solved, acc. 50 mm)
7821 27 Mar 06 12:39 LAG1 8 0 13 12 +- 65 -3 +- 69 7
7821 28 Mar 06 14:50 LAG1 2 0 19 -20 +- 113 -43 +- 645 0
7821 29 Mar 06 13:18 LAG1 6 0 20 0 +- 139 16 +- 109 4
7821 29 Mar 06 20:59 LAG2 4 0 44 -6 +- 120 -118 +- 316 18
7821 30 Mar 06 12:11 LAG1 5 0 15 -4 +- 155 16 +- 155 8
7821 2 Apr 06 11:35 LAG1 7 0 19 -12 +- 89 -4 +- 96 10
7821 2 Apr 06 15:09 LAG1 8 0 12 -23 +- 143 16 +- 94 8

Station 7824 (San Fernando) (position fixed, acc. 40 mm)
7824 26 Mar 06 21:49 LAG1 2 0 66 -289 +-2062 230 +-1338 0
7824 27 Mar 06 23:33 LAG1 19 0 70 66 +- 28 -9 +- 18 9
7824 28 Mar 06 19:07 LAG1 9 0 15 37 +- 133 -25 +- 75 4
7824 28 Mar 06 22:09 LAG1 4 0 70 45 +- 63 -19 +- 28 4

Station 7825 (Mount Stromlo) (position solved, acc. 10 mm)
7825 26 Mar 06 00:47 LAG1 16 0 12 -15 +- 13 6 +- 8 1
7825 26 Mar 06 05:39 LAG2 16 0 8 5 +- 10 1 +- 10 6
7825 26 Mar 06 09:27 LAG2 27 0 10 6 +- 8 -4 +- 4 1
7825 26 Mar 06 13:01 LAG1 15 0 18 -15 +- 10 -5 +- 5 5
7825 26 Mar 06 13:41 LAG2 13 0 12 0 +- 12 -8 +- 9 1
7825 26 Mar 06 16:40 LAG1 11 0 13 -3 +- 13 -8 +- 10 3
7825 26 Mar 06 17:49 LAG2 22 0 8 4 +- 9 4 +- 6 4
7825 26 Mar 06 19:55 LAG1 13 0 8 -3 +- 11 -7 +- 12 1
7825 26 Mar 06 23:31 LAG1 11 0 10 -17 +- 23 7 +- 14 3
7825 28 Mar 06 05:50 LAG2 16 0 16 -2 +- 10 14 +- 9 6
7825 28 Mar 06 09:41 LAG2 9 0 7 20 +- 72 6 +- 35 1
7825 29 Mar 06 11:57 LAG2 11 0 23 2 +- 12 -17 +- 9 2
7825 29 Mar 06 12:34 LAG1 3 0 19 4 +- 238 14 +- 142 1
7825 30 Mar 06 18:07 LAG1 5 0 45 24 +- 43 -20 +- 41 4
7825 30 Mar 06 18:19 LAG2 19 0 4 0 +- 9 -1 +- 7 3
7825 30 Mar 06 21:26 LAG1 11 1 18 -4 +- 14 -11 +- 10 3
7825 31 Mar 06 00:57 LAG1 9 0 11 -10 +- 14 -1 +- 15 4
7825 31 Mar 06 08:31 LAG2 1 0 19 0 +- 0 0 +- 0 0
7825 31 Mar 06 16:38 LAG2 4 0 8 -1 +- 23 -13 +- 36 1
7825 31 Mar 06 23:39 LAG1 2 0 10 -25 +- 320 -13 +- 305 0
7825 1 Apr 06 06:11 LAG2 14 0 20 14 +- 11 11 +- 8 6
7825 1 Apr 06 10:11 LAG2 26 0 4 0 +- 8 -1 +- 5 4
7825 1 Apr 06 11:57 LAG1 14 0 6 1 +- 11 0 +- 7 5
7825 1 Apr 06 14:29 LAG2 24 0 10 -2 +- 8 6 +- 5 3
7825 1 Apr 06 15:28 LAG1 16 0 6 2 +- 10 -4 +- 7 2
7825 1 Apr 06 22:25 LAG1 10 1 6 0 +- 27 0 +- 18 6
7825 2 Apr 06 02:02 LAG1 8 0 9 0 +- 53 3 +- 35 6
7825 2 Apr 06 04:31 LAG2 11 0 13 10 +- 12 10 +- 20 7
7825 2 Apr 06 08:15 LAG2 18 0 16 11 +- 10 -4 +- 6 5
7825 2 Apr 06 10:43 LAG1 8 0 12 -9 +- 15 -2 +- 21 6
7825 2 Apr 06 12:35 LAG2 5 0 15 12 +- 18 -5 +- 13 5
7825 2 Apr 06 14:05 LAG1 12 0 17 -21 +- 16 -7 +- 9 5
7825 2 Apr 06 17:17 LAG2 4 0 6 -28 +- 392 10 +- 184 1
7825 2 Apr 06 20:51 LAG1 16 0 5 0 +- 10 -1 +- 8 4

Station 7832 (Riyad) (position solved, acc. 20 mm)
7832 26 Mar 06 00:03 LAG2 8 0 14 11 +- 24 -8 +- 62 6
7832 26 Mar 06 03:57 LAG2 18 0 12 -7 +- 15 -6 +- 13 6
7832 26 Mar 06 08:25 LAG2 5 0 14 11 +- 63 -4 +- 124 6
7832 26 Mar 06 12:31 LAG2 9 0 27 12 +- 22 -21 +- 18 3

Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm)
7838 28 Mar 06 11:03 LAG1 19 0 38 37 +- 22 1 +- 13 7
7838 28 Mar 06 14:47 LAG1 11 0 26 31 +- 40 -7 +- 37 5
7838 29 Mar 06 09:43 LAG1 18 0 36 26 +- 22 17 +- 16 6
7838 29 Mar 06 13:08 LAG1 22 0 55 42 +- 20 16 +- 10 7
7838 30 Mar 06 11:50 LAG1 11 0 41 52 +- 37 17 +- 27 5
7838 31 Mar 06 00:15 LAG1 7 0 104 125 +- 148 14 +- 99 8
7838 31 Mar 06 04:19 LAG1 5 0 8 6 +- 537 -6 +- 219 1
7838 31 Mar 06 10:40 LAG1 12 0 65 43 +- 36 20 +- 26 9
7838 31 Mar 06 14:09 LAG1 13 0 51 22 +- 31 28 +- 24 6
7838 2 Apr 06 14:55 LAG1 10 0 24 18 +- 32 9 +- 35 8

Station 7839 (Graz) (position fixed, acc. 10 mm)
7839 27 Mar 06 09:35 LAG1 6 0 23 -19 +- 38 2 +- 22 0
7839 27 Mar 06 10:21 LAG2 16 0 5 6 +- 14 -5 +- 9 1
7839 27 Mar 06 14:13 LAG2 4 0 9 -8 +- 204 -10 +- 116 0
7839 28 Mar 06 15:18 LAG1 6 0 30 19 +- 30 -8 +- 22 1
7839 29 Mar 06 10:32 LAG2 9 0 2 0 +- 17 1 +- 11 1
7839 29 Mar 06 13:59 LAG1 9 0 26 -6 +- 23 15 +- 17 1
7839 29 Mar 06 14:29 LAG2 4 0 7 -2 +- 91 -7 +- 68 0
7839 29 Mar 06 17:31 LAG1 12 0 12 -7 +- 17 9 +- 10 1
7839 29 Mar 06 20:52 LAG1 8 0 3 -1 +- 16 -1 +- 8 1
7839 30 Mar 06 08:41 LAG2 3 0 8 -7 +- 38 1 +- 147 1
7839 31 Mar 06 14:41 LAG2 2 0 20 -4 +- 172 -17 +- 120 0
7839 31 Mar 06 18:13 LAG1 15 0 17 -4 +- 12 9 +- 6 3
7839 31 Mar 06 21:36 LAG1 13 0 13 -13 +- 11 0 +- 6 3

Station 7840 (Herstmonceux) (position fixed, acc. 20 mm)
7840 27 Mar 06 20:05 LAG1 18 0 24 4 +- 15 -13 +- 9 3
7840 28 Mar 06 15:25 LAG1 15 0 28 23 +- 17 -14 +- 12 3
7840 28 Mar 06 16:23 LAG2 9 0 19 -19 +- 25 -1 +- 36 1
7840 31 Mar 06 14:32 LAG2 7 0 21 -3 +- 69 -17 +- 48 1
7840 31 Mar 06 14:49 LAG1 9 0 24 3 +- 42 18 +- 28 2
7840 1 Apr 06 10:01 LAG1 8 0 16 17 +- 24 7 +- 36 2
7840 1 Apr 06 12:35 LAG2 20 0 8 6 +- 14 -2 +- 9 4
7840 1 Apr 06 13:39 LAG1 13 0 4 2 +- 25 -3 +- 15 1
7840 1 Apr 06 16:59 LAG1 15 0 19 18 +- 17 -6 +- 12 4
7840 1 Apr 06 20:27 LAG1 14 0 15 0 +- 19 -8 +- 10 2
7840 2 Apr 06 18:59 LAG1 19 0 21 18 +- 15 -4 +- 8 6
7840 2 Apr 06 22:31 LAG1 17 0 7 6 +- 16 1 +- 9 2

Station 7841 (Potsdam) (position solved, acc. 10 mm)
7841 28 Mar 06 04:29 LAG2 10 0 11 -13 +- 23 17 +- 22 3
7841 28 Mar 06 22:21 LAG1 7 0 26 17 +- 40 -7 +- 32 2
7841 31 Mar 06 21:47 LAG1 9 0 29 -9 +- 21 19 +- 19 7

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

Station 8834 (Wettzell) (position fixed, acc. 10 mm)
8834 27 Mar 06 10:24 LAG2 10 0 9 -4 +- 23 -3 +- 19 2
8834 27 Mar 06 13:19 LAG1 7 0 2 0 +- 19 -2 +- 23 1
8834 27 Mar 06 14:07 LAG2 10 0 7 13 +- 26 6 +- 17 3
8834 29 Mar 06 10:54 LAG2 3 0 19 -53 +- 260 17 +- 127 2
8834 29 Mar 06 21:03 LAG1 5 0 19 -19 +- 21 2 +- 13 6
--------------------------------------------------------------------------------



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 - 060403 0/155/ 0 0/ 67/ 0 222
1873 SIMLAS 050701 - 060403 0/ 66/ 0 0/ 15/ 0 81
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 - 060404 163/299/ 29 202/166/ 26 885
7080 MLRS25 050701 - 060402 7/119/ 2 11/ 93/ 3 235
7090 ML0514 050701 - 060403 325/278/ 42 235/359/ 33 1272
7105 ML0725 050704 - 060402 20/162/ 13 27/ 77/ 9 308
7110 ML0414 050701 - 060328 66/235/ 34 84/122/ 14 555
7124 ML0819 050818 - 060403 1/ 30/ 2 1/ 40/ 1 75
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 - 060330 0/290/ 2 0/176/ 0 468
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 - 060404 0/ 62/ 0 0/ 66/ 0 128
7501 ML0616 050701 - 060403 32/ 71/ 6 17/ 93/ 6 225
7810 ZIMLAT 050701 - 060404 164/299/ 29 202/164/ 25 883
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 - 060328 10/199/ 8 10/108/ 8 343
7825 STL3 050702 - 060403 375/185/ 30 218/276/ 32 1116
7832 SALRO 050702 - 060404 137/306/ 28 165/217/ 26 879
7835 GRASSE 050701 - 050705 0/ 3/ 0 0/ 2/ 0 5
7838 SHOLAS 050714 - 060403 49/166/ 9 54/123/ 8 409
7839 AUSLAS 050702 - 060331 103/197/ 26 143/ 84/ 9 562
7840 RGOLAS 050702 - 060402 123/295/ 35 159/132/ 19 763
7841 GFZLA3 050713 - 060403 16/132/ 12 18/ 53/ 8 239
7848 FTLR06 050515 - 051027 6/ 48/ 2 5/ 22/ 4 87
7941 MLROnn 050701 - 060404 84/192/ 14 104/ 92/ 17 503
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)
--------------------------------------------------------------
060327.0 99.5 +/- 0.1 376.9 +/- 0.1 288.16 +/- 0.01
060328.0 99.7 +/- 0.1 377.7 +/- 0.1 286.65 +/- 0.03
060329.0 100.9 +/- 0.1 376.5 +/- 0.1 285.02 +/- 0.04
060330.0 100.9 +/- 0.1 375.8 +/- 0.1 283.41 +/- 0.05
060331.0 102.5 +/- 0.1 375.3 +/- 0.1 282.02 +/- 0.05
060401.0 102.4 +/- 0.1 375.0 +/- 0.2 280.99 +/- 0.06
060402.0 103.3 +/- 0.1 374.4 +/- 0.1 280.28 +/- 0.06
--------------------------------------------------------------



From: Ron Noomen

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