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SLR-Report No.6995

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Date:2006-04-17 13:15:00
Sender:Ron Noomen <Ron Noomen <ron@astro.lr.tudelft.nl>>
Subject:[SLR-Report] No. 6995: Delft QL Report April 17, 2006
Author:Ron Noomen
Content:********************************************************************************
SLR Electronic Report 2006-04-17 13:15:00 UTC Message No. 6995
********************************************************************************

Author: Ron Noomen
Subject: Delft QL Report April 17, 2006


WEGENER-2 IERS

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


April 17, 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 17, 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 17, 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
------------------------------------------------------------------------------
6810 Zimmerwald 846, Switzerland 060417 - 060417 - 1
7090 Yarragadee, Australia 060415 - 060415 1 2
7406 San Juan, Argentina 060417 - 060417 3 2
7810 Zimmerwald 423, Switzerland 060417 - 060417 - 1
7824 San Fernando, Spain 060413 - 060413 - 1
7825 Mount Stromlo, Australia 060415 - 060416 6 6
7832 Riyad, Saudi Arabia 060415 - 060416 4 3
------ ------ --- ---
TOTAL 060413 - 060417 14 16
------------------------------------------------------------------------------


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, Apr 9, 2006 to Mon, Apr 17, 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 19 18
Number of Passes 120/120 97/ 97
Number of Normal Points 1217/1210 1322/1320
Weighted RMS of Fit (mm) 14 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 10 Apr 06 18:24 LAG1 7 0 111 -112 +- 252 -5 +- 266 17
1864 10 Apr 06 22:01 LAG2 9 0 27 -3 +- 211 31 +- 291 12

Station 6810 (Zimmerwald 846) (position fixed, acc. 60 mm)
6810 11 Apr 06 17:21 LAG1 14 0 14 6 +- 60 4 +- 33 5
6810 11 Apr 06 20:39 LAG1 13 0 8 4 +- 51 -2 +- 23 6
6810 14 Apr 06 10:31 LAG1 2 0 14 -272 +-9999 98 +-6502 0
6810 14 Apr 06 12:02 LAG2 18 0 27 13 +- 43 -11 +- 22 4
6810 14 Apr 06 13:13 LAG1 22 0 38 -17 +- 39 17 +- 21 2
6810 14 Apr 06 16:45 LAG1 19 0 10 -7 +- 42 4 +- 26 3

Station 7080 (McDonald Obs.) (position fixed, acc. 20 mm)
7080 9 Apr 06 01:32 LAG1 1 0 26 0 +- 0 0 +- 0 0
7080 9 Apr 06 05:07 LAG1 7 0 22 -3 +- 135 -9 +- 64 2
7080 9 Apr 06 09:01 LAG2 11 0 7 11 +- 37 -6 +- 38 2
7080 10 Apr 06 03:23 LAG1 8 0 14 -7 +- 52 4 +- 33 1
7080 10 Apr 06 07:05 LAG1 6 0 27 -30 +- 31 5 +- 32 3
7080 12 Apr 06 15:21 LAG2 7 0 2 1 +- 53 -1 +- 74 1
7080 13 Apr 06 13:17 LAG2 6 0 4 -1 +- 100 -5 +- 93 1
7080 13 Apr 06 15:23 LAG1 1 0 13 0 +- 0 0 +- 0 0
7080 14 Apr 06 15:51 LAG2 9 0 17 0 +- 48 -18 +- 50 2

Station 7090 (Yarragadee) (position fixed, acc. 10 mm)
7090 9 Apr 06 02:43 LAG1 15 0 11 1 +- 10 6 +- 6 3
7090 9 Apr 06 19:07 LAG1 4 0 18 49 +- 111 -32 +- 109 4
7090 9 Apr 06 19:21 LAG2 17 0 6 0 +- 10 -5 +- 9 1
7090 9 Apr 06 22:03 LAG1 15 0 7 -6 +- 10 1 +- 10 3
7090 10 Apr 06 01:43 LAG1 7 0 9 -5 +- 41 8 +- 27 4
7090 10 Apr 06 09:11 LAG2 19 1 9 0 +- 13 -5 +- 8 1
7090 10 Apr 06 13:17 LAG2 10 0 10 -11 +- 18 -4 +- 24 5
7090 10 Apr 06 13:59 LAG1 16 0 14 -14 +- 11 0 +- 5 3
7090 10 Apr 06 17:22 LAG2 12 0 2 -2 +- 13 0 +- 7 1
7090 10 Apr 06 17:35 LAG1 7 0 16 6 +- 21 -14 +- 27 1
7090 10 Apr 06 20:59 LAG1 8 0 22 -11 +- 22 -16 +- 29 2
7090 11 Apr 06 07:13 LAG2 13 0 16 -18 +- 13 8 +- 7 3
7090 11 Apr 06 11:11 LAG2 22 0 14 5 +- 9 -10 +- 6 1
7090 11 Apr 06 12:35 LAG1 16 0 11 1 +- 10 11 +- 10 1
7090 11 Apr 06 15:57 LAG2 10 0 9 0 +- 55 4 +- 32 2
7090 12 Apr 06 02:19 LAG1 12 0 24 -10 +- 12 15 +- 7 2
7090 12 Apr 06 21:49 LAG1 3 0 28 -32 +- 115 5 +- 148 0
7090 13 Apr 06 07:51 LAG2 8 0 15 -20 +- 118 15 +- 51 2
7090 13 Apr 06 11:33 LAG2 18 0 7 -1 +- 12 -4 +- 9 3
7090 13 Apr 06 13:19 LAG1 10 0 7 -19 +- 41 -12 +- 23 1
7090 13 Apr 06 15:43 LAG2 24 0 7 3 +- 8 2 +- 5 2
7090 13 Apr 06 17:03 LAG1 7 0 11 4 +- 18 -11 +- 25 2
7090 13 Apr 06 19:45 LAG2 16 0 14 9 +- 12 -6 +- 11 2
7090 13 Apr 06 23:37 LAG1 12 0 10 -7 +- 12 -3 +- 11 3
7090 14 Apr 06 03:05 LAG1 16 0 16 -17 +- 11 8 +- 7 2
7090 14 Apr 06 09:19 LAG2 29 0 9 0 +- 7 -5 +- 4 1
7090 14 Apr 06 12:11 LAG1 10 0 10 8 +- 14 6 +- 23 2
7090 14 Apr 06 13:43 LAG2 25 0 2 -2 +- 8 0 +- 6 1
7090 14 Apr 06 15:25 LAG1 23 0 13 -2 +- 8 6 +- 4 2
7090 14 Apr 06 17:49 LAG2 24 0 11 6 +- 8 -5 +- 4 4
7090 14 Apr 06 19:07 LAG1 10 0 10 10 +- 14 0 +- 19 1
7090 15 Apr 06 07:55 LAG2 10 0 23 -21 +- 40 24 +- 22 1
7090 15 Apr 06 12:01 LAG2 11 0 9 -20 +- 29 16 +- 21 2
7090 15 Apr 06 14:07 LAG1 16 0 10 -9 +- 11 -3 +- 6 4
7090 15 Apr 06 16:03 LAG2 9 0 11 11 +- 14 0 +- 9 1

Station 7105 (Greenbelt) (position fixed, acc. 10 mm)
7105 10 Apr 06 07:02 LAG2 18 0 5 4 +- 9 0 +- 8 2
7105 10 Apr 06 11:07 LAG2 15 0 10 6 +- 10 -7 +- 10 1
7105 11 Apr 06 09:05 LAG2 20 0 4 0 +- 9 2 +- 5 2
7105 12 Apr 06 07:47 LAG2 5 0 2 -4 +- 128 1 +- 87 0

Station 7110 (Monument Peak) (position fixed, acc. 10 mm)
7110 9 Apr 06 01:37 LAG1 5 0 2 0 +- 26 4 +- 57 2
7110 9 Apr 06 04:43 LAG1 1 0 10 0 +- 0 0 +- 0 0
7110 11 Apr 06 12:53 LAG2 8 0 3 10 +- 52 6 +- 35 0
7110 11 Apr 06 17:33 LAG2 3 0 16 25 +- 168 -11 +- 217 1
7110 11 Apr 06 18:35 LAG1 6 0 3 40 +- 195 -15 +- 75 1
7110 11 Apr 06 21:23 LAG2 4 0 11 -21 +- 100 -6 +- 66 1
7110 11 Apr 06 21:35 LAG1 15 0 5 -5 +- 10 0 +- 8 2
7110 12 Apr 06 01:06 LAG1 7 0 4 4 +- 30 0 +- 31 1
7110 12 Apr 06 04:17 LAG1 8 0 14 5 +- 18 13 +- 13 1
7110 12 Apr 06 07:57 LAG1 11 0 8 -8 +- 13 0 +- 20 2
7110 12 Apr 06 15:15 LAG2 13 0 6 5 +- 15 -2 +- 11 5
7110 12 Apr 06 16:45 LAG1 10 0 6 -3 +- 13 1 +- 8 4
7110 12 Apr 06 20:19 LAG1 13 0 9 6 +- 11 -6 +- 9 2
7110 12 Apr 06 23:29 LAG2 3 0 14 14 +- 222 23 +- 187 5
7110 12 Apr 06 23:47 LAG1 3 0 42 -39 +- 37 16 +- 151 5
7110 13 Apr 06 02:57 LAG1 11 0 9 8 +- 12 -1 +- 7 3
7110 13 Apr 06 06:26 LAG1 17 0 6 7 +- 11 -2 +- 6 2
7110 13 Apr 06 09:27 LAG2 9 0 6 -10 +- 28 14 +- 31 1
7110 13 Apr 06 13:15 LAG2 18 0 8 7 +- 11 -7 +- 8 1
7110 13 Apr 06 17:23 LAG2 12 0 13 -5 +- 13 -10 +- 10 6
7110 13 Apr 06 19:03 LAG1 8 0 4 -1 +- 18 1 +- 10 4
7110 14 Apr 06 11:19 LAG2 5 0 24 0 +- 72 -21 +- 67 3
7110 14 Apr 06 15:21 LAG2 16 0 23 8 +- 10 -19 +- 9 6

Station 7124 (Papeete) (position fixed, acc. 10 mm)
7124 10 Apr 06 06:47 LAG1 14 0 27 25 +- 12 -1 +- 10 12
7124 10 Apr 06 09:59 LAG2 2 0 27 887 +-1204 494 +- 684 0
7124 10 Apr 06 10:11 LAG1 5 0 11 -10 +- 19 -10 +- 20 1
7124 11 Apr 06 08:03 LAG2 9 3 13 -24 +- 50 -27 +- 71 10
7124 11 Apr 06 08:44 LAG1 8 0 3 2 +- 15 -1 +- 7 2
7124 12 Apr 06 06:06 LAG2 10 0 6 -7 +- 22 2 +- 32 1
7124 12 Apr 06 07:21 LAG1 16 0 18 16 +- 10 2 +- 5 6
7124 12 Apr 06 10:17 LAG2 14 0 17 16 +- 11 -1 +- 9 4
7124 12 Apr 06 10:59 LAG1 7 0 8 -10 +- 22 -6 +- 27 4

Station 7406 (San Juan) (position solved, acc. 100 mm)
7406 9 Apr 06 00:17 LAG2 12 0 89 42 +- 268 29 +- 166 2
7406 9 Apr 06 04:02 LAG1 7 0 109 -21 +- 331 54 +- 203 5
7406 9 Apr 06 04:17 LAG2 21 0 83 -1 +- 73 59 +- 52 6
7406 9 Apr 06 07:27 LAG1 8 0 77 97 +- 210 133 +- 195 2
7406 9 Apr 06 08:21 LAG2 14 0 91 -26 +- 81 109 +- 97 5
7406 10 Apr 06 02:09 LAG2 11 0 29 33 +- 203 45 +- 167 3
7406 10 Apr 06 02:35 LAG1 9 0 120 -75 +- 214 27 +- 121 4
7406 10 Apr 06 06:07 LAG1 11 0 85 57 +- 141 94 +- 109 2
7406 10 Apr 06 06:29 LAG2 17 0 98 -44 +- 79 83 +- 61 9
7406 10 Apr 06 09:31 LAG1 7 0 81 82 +- 166 172 +- 239 2
7406 11 Apr 06 00:19 LAG2 16 0 47 24 +- 94 21 +- 71 1
7406 11 Apr 06 01:13 LAG1 17 0 41 -41 +- 75 -10 +- 56 9
7406 11 Apr 06 04:21 LAG2 14 0 26 -30 +- 124 -28 +- 87 7
7406 11 Apr 06 04:51 LAG1 17 0 10 0 +- 75 -3 +- 43 8
7406 11 Apr 06 08:13 LAG1 11 0 76 72 +- 96 77 +- 121 3
7406 11 Apr 06 08:43 LAG2 14 0 23 -20 +- 142 33 +- 130 4
7406 12 Apr 06 02:25 LAG2 18 0 27 14 +- 70 -18 +- 57 2
7406 12 Apr 06 03:21 LAG1 9 0 28 -74 +- 283 -27 +- 131 3
7406 12 Apr 06 06:29 LAG2 13 0 29 -64 +- 184 -34 +- 114 6
7406 12 Apr 06 06:55 LAG1 14 0 80 77 +- 81 35 +- 79 2
7406 13 Apr 06 00:21 LAG2 17 0 40 46 +- 86 15 +- 75 7

Station 7501 (Hartebeesthoek) (position fixed, acc. 10 mm)
7501 12 Apr 06 22:43 LAG1 5 0 11 31 +- 221 -17 +- 91 1
7501 13 Apr 06 15:11 LAG2 3 0 3 -4 +- 92 12 +- 164 2
7501 13 Apr 06 19:27 LAG2 11 0 30 17 +- 25 13 +- 25 2
7501 14 Apr 06 22:57 LAG1 16 0 7 6 +- 10 0 +- 7 2
7501 15 Apr 06 01:26 LAG2 17 0 23 -8 +- 11 18 +- 11 2

Station 7810 (Zimmerwald 423) (position fixed, acc. 60 mm)
7810 11 Apr 06 17:22 LAG1 13 0 23 16 +- 72 4 +- 41 2
7810 11 Apr 06 20:41 LAG1 12 0 17 15 +- 52 -3 +- 25 6
7810 14 Apr 06 10:31 LAG1 1 0 37 0 +- 0 0 +- 0 0
7810 14 Apr 06 12:03 LAG2 15 0 36 21 +- 54 -11 +- 29 2
7810 14 Apr 06 13:13 LAG1 22 0 34 -9 +- 39 17 +- 21 1
7810 14 Apr 06 16:45 LAG1 19 0 8 0 +- 42 5 +- 26 2

Station 7811 (Borowiec) (position fixed, acc. 60 mm)
7811 9 Apr 06 20:09 LAG1 10 0 23 22 +- 64 -13 +- 52 9

Station 7824 (San Fernando) (position fixed, acc. 40 mm)
7824 10 Apr 06 22:11 LAG1 7 0 73 75 +- 97 1 +- 75 1
7824 11 Apr 06 20:47 LAG1 8 0 56 57 +- 90 1 +- 60 1
7824 12 Apr 06 00:25 LAG1 7 0 24 28 +- 81 7 +- 114 2
7824 12 Apr 06 23:19 LAG1 2 0 49 66 +-1245 -14 +-1048 0
7824 13 Apr 06 01:48 LAG2 1 0 21 0 +- 0 0 +- 0 0

Station 7825 (Mount Stromlo) (position solved, acc. 10 mm)
7825 9 Apr 06 07:01 LAG2 26 0 11 10 +- 8 1 +- 4 4
7825 9 Apr 06 11:11 LAG2 15 0 9 -6 +- 11 -1 +- 6 6
7825 9 Apr 06 11:41 LAG1 12 0 11 -11 +- 12 0 +- 7 3
7825 9 Apr 06 15:03 LAG1 15 0 5 -1 +- 10 0 +- 5 4
7825 9 Apr 06 15:23 LAG2 23 0 4 3 +- 8 -1 +- 5 1
7825 9 Apr 06 21:57 LAG1 6 0 8 7 +- 22 1 +- 30 4
7825 10 Apr 06 01:33 LAG1 6 0 4 1 +- 17 4 +- 43 3
7825 10 Apr 06 05:24 LAG2 12 0 6 6 +- 13 -1 +- 11 1
7825 10 Apr 06 17:15 LAG1 12 0 13 3 +- 12 -11 +- 11 3
7825 10 Apr 06 17:33 LAG2 17 0 7 0 +- 10 5 +- 8 2
7825 10 Apr 06 20:29 LAG1 19 0 25 -13 +- 9 -13 +- 6 2
7825 11 Apr 06 03:32 LAG2 10 0 7 -4 +- 13 -1 +- 23 5
7825 11 Apr 06 07:13 LAG2 28 0 17 14 +- 7 4 +- 4 4
7825 11 Apr 06 11:39 LAG2 14 0 7 6 +- 11 1 +- 9 3
7825 11 Apr 06 12:29 LAG1 16 0 13 -9 +- 10 6 +- 7 5
7825 11 Apr 06 15:35 LAG2 16 0 11 -7 +- 16 3 +- 10 2
7825 11 Apr 06 16:07 LAG1 3 0 4 -2 +- 26 8 +- 99 1
7825 11 Apr 06 19:14 LAG1 14 0 8 3 +- 11 -4 +- 10 6
7825 11 Apr 06 22:51 LAG1 12 0 16 -10 +- 23 12 +- 13 7
7825 12 Apr 06 05:35 LAG2 15 0 11 11 +- 11 0 +- 9 3
7825 12 Apr 06 09:27 LAG2 26 0 16 -4 +- 8 -10 +- 5 2
7825 12 Apr 06 10:59 LAG1 19 0 18 -17 +- 9 -2 +- 6 2
7825 12 Apr 06 13:39 LAG2 23 0 15 -12 +- 8 -5 +- 5 3
7825 12 Apr 06 14:33 LAG1 9 0 6 -2 +- 14 -2 +- 6 4
7825 13 Apr 06 07:29 LAG2 21 0 13 11 +- 9 2 +- 5 5
7825 13 Apr 06 19:57 LAG1 17 0 15 6 +- 10 -10 +- 7 3
7825 13 Apr 06 23:33 LAG1 7 0 5 3 +- 16 0 +- 13 3
7825 14 Apr 06 18:44 LAG1 8 0 9 -5 +- 15 -5 +- 16 4
7825 14 Apr 06 22:07 LAG1 15 0 4 -2 +- 12 -1 +- 7 3
7825 15 Apr 06 03:53 LAG2 11 0 11 10 +- 15 11 +- 17 5
7825 15 Apr 06 10:31 LAG1 16 0 7 0 +- 10 -6 +- 10 1
7825 15 Apr 06 12:03 LAG2 19 0 19 -4 +- 9 14 +- 7 3
7825 15 Apr 06 16:07 LAG2 23 0 8 5 +- 8 -1 +- 6 5
7825 15 Apr 06 17:31 LAG1 10 0 16 14 +- 14 -11 +- 13 7
7825 15 Apr 06 20:43 LAG1 19 0 10 1 +- 9 -6 +- 6 3
7825 16 Apr 06 05:53 LAG2 16 0 4 -1 +- 10 0 +- 7 4
7825 16 Apr 06 09:57 LAG2 19 0 16 4 +- 9 -8 +- 6 5
7825 16 Apr 06 12:35 LAG1 19 0 12 -9 +- 9 1 +- 5 7
7825 16 Apr 06 14:09 LAG2 24 0 5 -3 +- 8 0 +- 5 4
7825 16 Apr 06 16:19 LAG1 8 0 13 -5 +- 18 -9 +- 19 3
7825 16 Apr 06 22:54 LAG1 9 0 16 -2 +- 14 9 +- 8 5

Station 7832 (Riyad) (position solved, acc. 20 mm)
7832 9 Apr 06 19:43 LAG1 4 0 11 -15 +- 173 -18 +- 125 2
7832 10 Apr 06 15:07 LAG1 5 0 43 45 +- 44 -7 +- 84 7
7832 10 Apr 06 18:27 LAG1 3 0 18 -30 +- 144 -16 +- 178 2
7832 11 Apr 06 16:53 LAG1 7 0 9 -12 +- 120 -2 +- 60 3
7832 12 Apr 06 04:05 LAG2 10 0 7 -5 +- 22 7 +- 35 4
7832 12 Apr 06 08:31 LAG2 4 0 7 -8 +- 54 -7 +- 144 3
7832 12 Apr 06 15:41 LAG1 11 0 6 2 +- 20 6 +- 22 2
7832 13 Apr 06 07:45 LAG1 14 0 18 -4 +- 18 9 +- 9 3
7832 13 Apr 06 17:45 LAG1 8 0 15 -11 +- 23 -6 +- 12 4
7832 14 Apr 06 19:59 LAG1 11 0 12 7 +- 19 -8 +- 22 4
7832 14 Apr 06 22:23 LAG2 9 0 4 6 +- 34 -7 +- 46 1
7832 15 Apr 06 02:13 LAG2 14 0 14 -6 +- 17 14 +- 20 2
7832 15 Apr 06 06:53 LAG2 9 0 9 -14 +- 52 18 +- 51 3
7832 15 Apr 06 08:51 LAG1 7 0 8 -27 +- 98 15 +- 52 4
7832 15 Apr 06 15:29 LAG1 3 0 16 24 +- 435 -6 +- 307 4
7832 15 Apr 06 18:31 LAG1 8 0 13 -6 +- 24 -3 +- 10 5
7832 16 Apr 06 00:19 LAG2 6 0 13 0 +- 68 -13 +- 69 4
7832 16 Apr 06 04:33 LAG2 11 0 15 13 +- 20 -9 +- 38 3
7832 16 Apr 06 07:22 LAG1 2 0 7 -7 +- 52 0 +- 78 0

Station 7838 (Simosato Observatory) (position fixed, acc. 30 mm)
7838 13 Apr 06 13:53 LAG1 20 0 19 15 +- 21 6 +- 15 6

Station 7839 (Graz) (position fixed, acc. 10 mm)
7839 9 Apr 06 01:29 LAG2 10 0 12 -9 +- 13 -8 +- 10 0
7839 10 Apr 06 07:43 LAG2 9 0 11 7 +- 22 -3 +- 20 0
7839 10 Apr 06 08:17 LAG1 2 0 11 -2 +- 307 9 +- 300 0

Station 7840 (Herstmonceux) (position fixed, acc. 20 mm)
7840 9 Apr 06 05:23 LAG2 20 0 3 -1 +- 14 -1 +- 10 1
7840 9 Apr 06 09:43 LAG2 3 0 14 8 +- 127 -9 +- 219 0
7840 9 Apr 06 09:47 LAG1 3 0 13 -10 +- 45 23 +- 254 1
7840 9 Apr 06 16:51 LAG1 2 0 4 1 +- 115 12 +- 387 0
7840 10 Apr 06 07:59 LAG2 9 0 8 17 +- 83 -5 +- 48 2
7840 10 Apr 06 18:45 LAG1 13 0 12 7 +- 19 -6 +- 11 4
7840 10 Apr 06 22:13 LAG1 18 0 10 0 +- 15 -5 +- 9 3
7840 11 Apr 06 05:35 LAG2 20 0 17 4 +- 15 13 +- 11 2
7840 12 Apr 06 03:45 LAG2 20 0 11 1 +- 14 8 +- 11 2
7840 12 Apr 06 07:45 LAG2 19 0 11 9 +- 15 0 +- 9 5
7840 12 Apr 06 09:07 LAG1 5 0 6 -3 +- 49 5 +- 87 2
7840 12 Apr 06 16:03 LAG1 9 0 15 12 +- 22 5 +- 14 3
7840 12 Apr 06 19:39 LAG1 9 0 17 -7 +- 28 -7 +- 19 3

Station 7841 (Potsdam) (position solved, acc. 10 mm)
7841 9 Apr 06 19:57 LAG1 10 0 11 5 +- 21 0 +- 11 10
7841 14 Apr 06 04:03 LAG2 16 0 13 -9 +- 11 5 +- 9 2
7841 14 Apr 06 20:11 LAG1 17 0 11 9 +- 10 -3 +- 5 2

Station 7941 (Matera) (position solved, acc. 10 mm)
7941 13 Apr 06 18:23 LAG1 8 0 4 11 +- 72 -3 +- 31 1
7941 13 Apr 06 21:51 LAG1 10 0 4 -4 +- 40 0 +- 23 1
7941 14 Apr 06 00:10 LAG2 10 0 9 3 +- 13 13 +- 22 2
7941 14 Apr 06 12:11 LAG2 5 0 39 -36 +- 249 -34 +- 112 2
7941 14 Apr 06 13:23 LAG1 11 0 24 -15 +- 13 15 +- 13 3
7941 14 Apr 06 16:51 LAG1 12 0 7 0 +- 16 5 +- 12 1
7941 14 Apr 06 20:07 LAG1 8 0 9 4 +- 15 -3 +- 6 3
7941 15 Apr 06 02:01 LAG2 14 0 16 17 +- 19 19 +- 14 2

Station 8834 (Wettzell) (position fixed, acc. 10 mm)
8834 15 Apr 06 06:05 LAG2 11 0 20 3 +- 39 13 +- 23 4
8834 15 Apr 06 08:19 LAG1 2 0 2 -89 +-1632 -41 +- 746 0
--------------------------------------------------------------------------------



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 - 060410 0/159/ 0 0/ 68/ 0 227
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 - 060417 177/303/ 29 211/167/ 26 913
7080 MLRS25 050701 - 060414 8/123/ 3 14/ 95/ 4 247
7090 ML0514 050701 - 060415 338/305/ 44 243/385/ 34 1349
7105 ML0725 050704 - 060412 21/162/ 13 30/ 81/ 9 316
7110 ML0414 050701 - 060414 77/244/ 34 94/124/ 15 588
7124 ML0819 050818 - 060412 1/ 40/ 2 1/ 46/ 1 91
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 - 060417 0/ 82/ 0 0/ 87/ 0 169
7501 ML0616 050701 - 060415 38/ 83/ 6 20/107/ 8 262
7810 ZIMLAT 050701 - 060417 176/303/ 29 210/165/ 25 908
7811 POLLAS 050704 - 060409 0/116/ 0 0/ 28/ 0 144
7821 CHILAS 051213 - 060407 0/ 17/ 0 0/ 16/ 0 33
7824 SPNLAS 050701 - 060413 10/209/ 8 10/109/ 8 354
7825 STL3 050702 - 060416 391/205/ 32 227/296/ 33 1184
7832 SALRO 050702 - 060416 141/316/ 30 170/220/ 27 904
7835 GRASSE 050701 - 050705 0/ 3/ 0 0/ 2/ 0 5
7838 SHOLAS 050714 - 060413 50/172/ 9 57/123/ 8 419
7839 AUSLAS 050702 - 060410 108/201/ 27 150/ 86/ 9 581
7840 RGOLAS 050702 - 060412 130/298/ 36 166/133/ 19 782
7841 GFZLA3 050713 - 060414 18/135/ 12 19/ 54/ 9 247
7848 FTLR06 050515 - 051027 6/ 48/ 2 5/ 22/ 4 87
7941 MLROnn 050701 - 060415 88/197/ 14 106/ 95/ 17 517
8834 WLRS01 050702 - 060415 129/216/ 30 157/113/ 20 665
--------------------------------------------------------------------------


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)
--------------------------------------------------------------
060410.0 104.1 +/- 0.1 370.7 +/- 0.1 275.96 +/- 0.01
060411.0 104.2 +/- 0.1 369.8 +/- 0.1 274.90 +/- 0.02
060412.0 103.4 +/- 0.1 369.0 +/- 0.1 273.85 +/- 0.03
060413.0 103.4 +/- 0.1 368.1 +/- 0.1 272.72 +/- 0.03
060414.0 103.7 +/- 0.1 367.7 +/- 0.1 271.69 +/- 0.04
060415.0 102.0 +/- 0.1 367.8 +/- 0.1 270.72 +/- 0.04
060416.0 102.1 +/- 0.2 366.9 +/- 0.2 270.01 +/- 0.05
--------------------------------------------------------------



From: Ron Noomen

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