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SLR-Report No.804

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Date:2001-03-27 06:45:00
Sender:Ron Noomen, DEOS, Delft, The Netherlands <Ron Noomen <Ron.Noomen@lr.tudelft.nl>>
Subject:[SLR-Report] No. 804: Delft QL Report, March 27, 2001
Author:Ron Noomen, DEOS, Delft, The Netherlands
Content:********************************************************************************
SLR Electronic Report 2001-03-27 06:45:00 UTC Message No. 804
********************************************************************************

Author: Ron Noomen, DEOS, Delft, The Netherlands
Subject: Delft QL Report, March 27, 2001


WEGENER-2 IERS

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


March 27, 2001


This is a weekly 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, Mar 26, 2001.
Questions and comments should be addressed to:

K.F. Wakker
Delft University of Technology
Faculty of Aerospace Engineering
Delft Institute for Earth-Oriented Space Research
Kluyverweg 1
NL-2629 HS Delft
The Netherlands

Telephone: +31-(0)15-2782065/2785377
Telefax : +31-(0)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,
Mar 26, 2001. 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
------------------------------------------------------------------------------
1824 Kiev, Ukraine 010322 - 010323 2 1
1884 Riga, Latvia 010320 - 010321 4 1
7080 McDonald Obs., Fort Davis, TX 010319 - 010326 11 13
7090 Yarragadee, Australia 010320 - 010326 10 13
7105 Greenbelt, Maryland 010318 - 010326 16 9
7110 Monument Peak, California 010319 - 010326 24 11
7210 Haleakala Obs., Maui, Hawaii 010320 - 010323 2 5
7237 Changchun, China 010320 - 010325 4 1
7403 Arequipa, Peru (TLRS-3) 010322 - 010322 - 1
7501 Hartebeesthoek, SA (MOB-6) 010321 - 010321 - 1
7806 Metsahovi, Finland 010319 - 010326 15 3
7810 Zimmerwald, Switzerland 010325 - 010325 - 1
7811 Borowiec, Poland 010320 - 010322 6 1
7824 San Fernando, Spain 010319 - 010325 6 7
7832 Riyad, Saudi Arabia 010320 - 010326 3 6
7836 Potsdam, Germany 010320 - 010321 3 -
7837 Shanghai Observatory, China 010321 - 010321 1 1
7838 Simosato Observatory, Japan 010313 - 010313 - 1
7839 Graz, Austria 010323 - 010325 3 1
7840 Herstmonceux, United Kingdom 010319 - 010322 2 3
7845 Grasse, France (LLR) 010319 - 010326 2 3
7849 Mount Stromlo, Australia 010319 - 010326 5 6
------ ------ --- ---
TOTAL 010313 - 010326 119 89
------------------------------------------------------------------------------


B. ANALYSIS RESULTS

The analysis is based on two orbit solutions using global quick-look normal
points that cover a period of 10 days which are computed simultaneously. This
week´s data interval runs from Thu, Mar 15, 2001 to Sun, Mar 25, 2001. The
measurement and dynamic models used in this analysis are close to the IERS
Standard. The overall model is referred to as QLDACMOD9. The details of this
model can be obtained on request. The terrestrial reference frame is provided
by a special version of the SSC(DUT) 93L05 station coordinates solution.

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

-----------------------------------------------------------------------
Satellite LAGEOS-1 LAGEOS-2
Number of Stations 22 23
Number of Passes 162/160 120/116
Number of Normal Points 1807/1747 1371/1328
RMS of Fit (mm) 29 27
-----------------------------------------------------------------------


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 1824 (Kiev) (Position solved, acc. 200 mm)
1824 22 Mar 01 18:49 LAG2 4 1 897 583 +- 573 -1649 +- 738 91*CHK*
1824 22 Mar 01 20:15 LAG1 2 0 68 -12 +- 604 119 +-1210 0
1824 23 Mar 01 19:03 LAG1 6 1 95 -34 +- 932 19 +- 555 94

Station 1884 (Riga) (Position fixed, acc. 100 mm)
1884 20 Mar 01 18:27 LAG2 10 0 76 -91 +- 137 25 +- 128 11
1884 20 Mar 01 19:19 LAG1 16 0 120 -118 +- 78 -4 +- 50 15
1884 20 Mar 01 22:47 LAG1 14 0 62 -58 +- 83 -12 +- 52 11
1884 21 Mar 01 02:21 LAG1 11 0 72 -70 +- 95 -1 +- 78 17
1884 21 Mar 01 17:55 LAG1 7 0 114 -113 +- 167 0 +- 97 12

Station 7080 (McDonald Obs.) (Position fixed, acc. 20 mm)
7080 16 Mar 01 12:53 LAG1 15 0 18 9 +- 32 -7 +- 23 4
7080 19 Mar 01 05:38 LAG2 6 0 8 2 +- 76 14 +- 101 1
7080 19 Mar 01 19:08 LAG2 8 0 8 0 +- 38 -3 +- 17 2
7080 20 Mar 01 00:59 LAG1 14 0 8 6 +- 33 -4 +- 17 2
7080 20 Mar 01 03:43 LAG2 14 0 11 -7 +- 31 7 +- 20 5
7080 20 Mar 01 17:55 LAG2 2 0 35 478 +-4643 -211 +-2216 0
7080 20 Mar 01 21:31 LAG2 14 0 9 8 +- 28 -2 +- 32 1
7080 20 Mar 01 23:37 LAG1 14 0 32 29 +- 30 5 +- 24 6
7080 21 Mar 01 13:07 LAG1 12 0 24 -19 +- 53 4 +- 37 3
7080 21 Mar 01 19:35 LAG2 7 0 16 19 +- 60 5 +- 78 1
7080 21 Mar 01 22:23 LAG1 8 0 44 43 +- 67 0 +- 82 5
7080 21 Mar 01 23:45 LAG2 16 0 13 9 +- 29 -9 +- 20 2
7080 22 Mar 01 01:48 LAG1 17 0 6 7 +- 32 -1 +- 18 2
7080 22 Mar 01 21:45 LAG2 10 0 15 7 +- 34 -9 +- 28 2
7080 23 Mar 01 00:23 LAG1 11 0 15 3 +- 35 -11 +- 30 2
7080 23 Mar 01 01:58 LAG2 3 0 7 -8 +- 863 -8 +- 472 0
7080 23 Mar 01 19:51 LAG2 2 0 8 -39 +-2684 -31 +-2667 0
7080 23 Mar 01 22:57 LAG1 19 0 5 -4 +- 25 1 +- 18 2
7080 24 Mar 01 00:01 LAG2 13 0 27 20 +- 32 7 +- 23 5
7080 24 Mar 01 02:37 LAG1 4 0 7 -6 +- 71 0 +- 79 4
7080 24 Mar 01 04:11 LAG2 10 0 8 0 +- 38 8 +- 42 2

Station 7090 (Yarragadee) (Position fixed, acc. 10 mm)
7090 15 Mar 01 08:59 LAG1 2 0 24 -12 +- 531 14 +- 598 0
7090 15 Mar 01 16:49 LAG2 21 0 33 2 +- 21 -17 +- 11 2
7090 16 Mar 01 10:57 LAG1 21 0 25 12 +- 21 -16 +- 14 2
7090 16 Mar 01 14:59 LAG2 17 0 18 0 +- 24 -13 +- 18 4
7090 16 Mar 01 19:03 LAG2 26 0 16 -7 +- 18 -10 +- 14 2
7090 16 Mar 01 20:03 LAG1 11 0 65 -59 +- 33 14 +- 42 2
7090 17 Mar 01 09:35 LAG1 16 0 10 -4 +- 24 -5 +- 12 2
7090 17 Mar 01 13:11 LAG2 17 0 9 -2 +- 23 -9 +- 26 2
7090 17 Mar 01 17:01 LAG2 21 0 4 -3 +- 22 -1 +- 14 3
7090 18 Mar 01 11:55 LAG1 11 0 11 -8 +- 29 -11 +- 45 1
7090 18 Mar 01 15:07 LAG2 24 0 7 -6 +- 19 -1 +- 10 3
7090 18 Mar 01 19:21 LAG2 25 0 12 -10 +- 19 -2 +- 16 2
7090 18 Mar 01 20:51 LAG1 19 0 29 -23 +- 23 17 +- 15 4
7090 18 Mar 01 23:53 LAG2 12 0 18 -17 +- 28 13 +- 34 0
7090 19 Mar 01 00:21 LAG1 6 0 8 -7 +- 140 0 +- 95 1
7090 20 Mar 01 05:47 LAG1 6 0 23 -24 +- 40 -5 +- 89 0
7090 20 Mar 01 09:05 LAG1 4 0 22 -9 +- 408 -17 +- 220 1
7090 20 Mar 01 15:35 LAG2 21 0 13 -13 +- 25 9 +- 16 3
7090 20 Mar 01 19:33 LAG2 12 0 19 -22 +- 66 -2 +- 54 1
7090 21 Mar 01 11:15 LAG1 16 0 9 -9 +- 24 -2 +- 23 1
7090 21 Mar 01 13:31 LAG2 21 0 10 -1 +- 21 -6 +- 15 4
7090 21 Mar 01 17:39 LAG2 20 0 17 -15 +- 21 -4 +- 16 3
7090 22 Mar 01 06:27 LAG1 15 0 20 -17 +- 25 -5 +- 20 2
7090 22 Mar 01 09:51 LAG1 11 0 26 4 +- 40 -17 +- 31 2
7090 22 Mar 01 16:07 LAG2 10 0 27 -9 +- 132 -9 +- 68 0
7090 22 Mar 01 19:51 LAG2 2 0 19 -108 +-2925 -78 +-1807 0
7090 23 Mar 01 08:27 LAG1 16 0 17 -16 +- 25 -7 +- 15 2
7090 23 Mar 01 13:47 LAG2 23 0 20 20 +- 20 -6 +- 14 3
7090 23 Mar 01 17:45 LAG2 25 0 12 4 +- 19 -8 +- 13 2
7090 24 Mar 01 10:45 LAG1 10 0 9 9 +- 31 8 +- 40 1
7090 24 Mar 01 12:06 LAG2 7 0 10 2 +- 36 -24 +- 95 1
7090 24 Mar 01 15:47 LAG2 26 0 13 11 +- 18 -3 +- 11 4
7090 24 Mar 01 19:39 LAG1 14 0 37 -22 +- 29 21 +- 30 1
7090 24 Mar 01 20:07 LAG2 9 0 19 -11 +- 120 -23 +- 96 1

Station 7105 (Greenbelt) (Position fixed, acc. 10 mm)
7105 15 Mar 01 00:41 LAG1 10 0 33 -28 +- 41 -4 +- 31 2
7105 15 Mar 01 01:05 LAG2 16 0 28 -19 +- 24 12 +- 12 8
7105 15 Mar 01 03:59 LAG1 6 0 19 13 +- 41 -11 +- 45 1
7105 18 Mar 01 03:57 LAG2 2 0 31 -91 +-3438 40 +-2328 0
7105 18 Mar 01 21:37 LAG2 16 0 9 -9 +- 32 0 +- 21 2
7105 19 Mar 01 01:35 LAG2 17 0 28 -28 +- 25 7 +- 13 10
7105 19 Mar 01 05:25 LAG1 14 0 26 20 +- 25 -12 +- 22 5
7105 19 Mar 01 08:49 LAG1 17 0 17 15 +- 23 -6 +- 14 1
7105 19 Mar 01 23:41 LAG2 15 0 14 -8 +- 24 6 +- 13 4
7105 20 Mar 01 00:39 LAG1 11 0 29 -6 +- 29 -11 +- 11 4
7105 20 Mar 01 03:49 LAG2 6 0 33 -30 +- 62 6 +- 95 1
7105 20 Mar 01 07:53 LAG1 6 0 16 18 +- 262 -15 +- 120 1
7105 23 Mar 01 00:19 LAG1 4 0 6 -11 +- 83 -16 +- 128 1
7105 23 Mar 01 02:37 LAG2 3 0 19 -476 +-1616 221 +- 745 10
7105 23 Mar 01 03:41 LAG1 3 0 6 -26 +- 300 -22 +- 324 1
7105 23 Mar 01 07:05 LAG1 7 0 6 4 +- 36 -7 +- 55 1
7105 23 Mar 01 10:35 LAG1 2 0 12 -52 +- 700 -50 +- 885 0
7105 24 Mar 01 00:15 LAG2 16 0 18 -14 +- 27 11 +- 15 2
7105 24 Mar 01 02:35 LAG1 5 0 20 -19 +- 161 0 +- 129 3
7105 24 Mar 01 05:39 LAG1 9 0 39 35 +- 33 -9 +- 31 2
7105 24 Mar 01 09:05 LAG1 4 0 10 11 +- 312 0 +- 177 1

Station 7110 (Monument Peak) (Position fixed, acc. 10 mm)
7110 15 Mar 01 04:11 LAG1 15 0 7 2 +- 25 5 +- 18 3
7110 15 Mar 01 04:59 LAG2 14 0 12 -11 +- 28 0 +- 13 3
7110 15 Mar 01 10:49 LAG1 15 1 13 -3 +- 26 7 +- 17 3
7110 15 Mar 01 14:33 LAG1 9 0 9 7 +- 34 0 +- 41 5
7110 16 Mar 01 03:15 LAG1 4 0 9 -2 +- 215 5 +- 102 2
7110 16 Mar 01 06:33 LAG1 3 0 6 9 +- 258 -5 +- 410 1
7110 16 Mar 01 07:31 LAG2 5 0 8 -15 +- 276 5 +- 204 1
7110 16 Mar 01 12:54 LAG1 11 0 4 -4 +- 55 -3 +- 31 2
7110 17 Mar 01 01:12 LAG2 3 0 32 -57 +- 332 -25 +- 332 1
7110 17 Mar 01 01:33 LAG1 19 0 39 -40 +- 24 15 +- 13 7
7110 17 Mar 01 04:59 LAG1 5 0 13 -5 +- 214 5 +- 142 1
7110 17 Mar 01 05:07 LAG2 7 0 24 -26 +- 67 -1 +- 34 4
7110 17 Mar 01 08:23 LAG1 8 0 6 -1 +- 34 5 +- 37 4
7110 17 Mar 01 11:45 LAG1 17 0 8 -6 +- 27 -1 +- 15 2
7110 18 Mar 01 03:23 LAG2 15 0 41 -39 +- 27 0 +- 16 10
7110 18 Mar 01 04:07 LAG1 4 0 17 -19 +- 578 15 +- 251 0
7110 18 Mar 01 07:06 LAG1 8 0 14 -13 +- 34 0 +- 57 3
7110 18 Mar 01 07:23 LAG2 13 0 13 14 +- 27 -1 +- 30 1
7110 18 Mar 01 10:15 LAG1 14 0 10 4 +- 26 5 +- 14 3
7110 18 Mar 01 14:01 LAG1 11 0 13 -14 +- 40 1 +- 28 2
7110 18 Mar 01 21:18 LAG2 1 0 51 0 +- 0 0 +- 0 0
7110 19 Mar 01 01:23 LAG2 4 0 13 -62 +- 431 -35 +- 301 1
7110 19 Mar 01 02:17 LAG1 13 0 34 -21 +- 28 15 +- 12 5
7110 19 Mar 01 05:25 LAG2 8 0 21 -35 +- 118 -9 +- 71 1
7110 19 Mar 01 05:59 LAG1 7 0 6 -5 +- 78 10 +- 75 1
7110 19 Mar 01 09:01 LAG1 14 0 7 -5 +- 26 2 +- 22 4
7110 19 Mar 01 23:43 LAG2 4 0 47 -36 +- 214 -12 +- 218 0
7110 20 Mar 01 01:09 LAG1 13 0 24 -37 +- 46 12 +- 26 3
7110 20 Mar 01 03:29 LAG2 25 0 40 -37 +- 19 -2 +- 11 13
7110 20 Mar 01 04:27 LAG1 5 0 20 -16 +- 43 5 +- 23 2
7110 20 Mar 01 11:07 LAG1 10 0 9 -10 +- 40 -2 +- 32 2
7110 21 Mar 01 03:13 LAG1 16 0 26 -32 +- 30 15 +- 17 3
7110 21 Mar 01 05:45 LAG2 10 0 14 -14 +- 30 4 +- 23 2
7110 21 Mar 01 06:39 LAG1 8 0 10 -12 +- 43 9 +- 60 1
7110 21 Mar 01 09:53 LAG1 7 0 21 -1 +- 40 13 +- 23 3
7110 21 Mar 01 13:15 LAG1 12 0 12 -1 +- 27 6 +- 14 3
7110 22 Mar 01 03:53 LAG2 11 0 19 -16 +- 29 -6 +- 22 4
7110 22 Mar 01 08:33 LAG1 7 0 15 7 +- 36 12 +- 31 1
7110 22 Mar 01 11:45 LAG1 20 0 12 3 +- 21 5 +- 9 2
7110 22 Mar 01 17:35 LAG2 3 0 37 -58 +- 558 -15 +- 411 3
7110 23 Mar 01 03:49 LAG1 8 0 9 -4 +- 109 2 +- 61 1
7110 23 Mar 01 05:55 LAG2 9 0 15 16 +- 38 -1 +- 23 2
7110 23 Mar 01 07:29 LAG1 4 0 6 -10 +- 128 7 +- 177 3
7110 23 Mar 01 10:33 LAG1 17 0 32 -29 +- 23 11 +- 15 5
7110 23 Mar 01 14:15 LAG1 10 0 17 10 +- 40 6 +- 34 4
7110 24 Mar 01 02:39 LAG1 15 0 19 -21 +- 29 6 +- 17 7
7110 24 Mar 01 03:57 LAG2 16 0 10 -8 +- 24 1 +- 13 3
7110 24 Mar 01 06:01 LAG1 9 0 8 6 +- 33 11 +- 48 1
7110 24 Mar 01 09:17 LAG1 3 0 23 -2 +- 62 13 +- 32 0
7110 24 Mar 01 12:43 LAG1 9 0 19 28 +- 47 15 +- 39 0

Station 7210 (Haleakala Obs.) (Position fixed, acc. 20 mm)
7210 15 Mar 01 04:39 LAG1 2 0 8 29 +- 867 18 +- 798 0
7210 15 Mar 01 05:11 LAG2 6 0 58 63 +- 190 -5 +- 165 8
7210 15 Mar 01 08:49 LAG2 24 0 7 -2 +- 22 -2 +- 12 6
7210 16 Mar 01 03:25 LAG1 11 0 12 -27 +- 77 14 +- 42 3
7210 16 Mar 01 06:44 LAG1 2 0 17 -5 +- 885 -22 +- 843 0
7210 16 Mar 01 06:55 LAG2 23 0 27 24 +- 22 -5 +- 13 7
7210 20 Mar 01 04:49 LAG1 17 0 18 -18 +- 29 0 +- 17 3
7210 20 Mar 01 07:23 LAG2 8 1 11 -5 +- 44 -3 +- 22 8
7210 21 Mar 01 05:33 LAG2 22 0 28 -27 +- 24 0 +- 16 7
7210 21 Mar 01 09:45 LAG2 15 0 20 15 +- 38 1 +- 33 11
7210 22 Mar 01 05:33 LAG1 7 0 9 -2 +- 40 -1 +- 26 8
7210 22 Mar 01 07:39 LAG2 22 1 24 -6 +- 24 -13 +- 15 5
7210 23 Mar 01 05:45 LAG2 14 0 31 -26 +- 30 -20 +- 24 8

Station 7237 (Changchun) (Position fixed, acc. 50 mm)
7237 15 Mar 01 11:35 LAG1 16 0 36 14 +- 44 21 +- 26 5
7237 15 Mar 01 12:13 LAG2 18 0 24 -3 +- 44 -16 +- 30 6
7237 15 Mar 01 15:12 LAG1 12 0 28 -4 +- 56 26 +- 49 6
7237 15 Mar 01 18:25 LAG1 15 0 27 -18 +- 48 7 +- 27 6
7237 17 Mar 01 12:47 LAG2 5 0 23 -27 +- 112 12 +- 206 2
7237 17 Mar 01 12:55 LAG1 5 0 27 33 +- 808 -5 +- 341 18
7237 17 Mar 01 19:25 LAG1 12 0 16 -10 +- 58 -5 +- 43 6
7237 18 Mar 01 10:39 LAG2 16 0 35 -34 +- 43 2 +- 31 6
7237 18 Mar 01 11:07 LAG1 11 0 38 -32 +- 58 16 +- 26 13
7237 20 Mar 01 18:58 LAG1 9 0 24 -32 +- 123 5 +- 74 2
7237 22 Mar 01 11:18 LAG2 14 0 18 -9 +- 77 -4 +- 48 8
7237 22 Mar 01 16:07 LAG1 8 0 36 -30 +- 61 10 +- 49 10
7237 22 Mar 01 19:27 LAG1 13 0 35 -13 +- 60 14 +- 35 7

Station 7249 (Beijing) (Position fixed, acc. 50 mm)
7249 15 Mar 01 11:51 LAG1 1 0 44 0 +- 0 0 +- 0 0
7249 17 Mar 01 12:58 LAG2 1 0 191 0 +- 0 0 +- 0 0
7249 17 Mar 01 19:27 LAG1 8 0 10 0 +- 63 -6 +- 76 8

Station 7403 (Arequipa) (Position fixed, acc. 10 mm)
7403 22 Mar 01 13:27 LAG2 4 0 9 8 +- 49 6 +- 92 4

Station 7501 (Hartebeesthoek) (Position solved, acc. 10 mm)
7501 15 Mar 01 06:49 LAG2 13 0 2 0 +- 27 0 +- 25 2
7501 15 Mar 01 12:59 LAG1 10 0 27 -14 +- 60 27 +- 42 2
7501 15 Mar 01 16:13 LAG1 18 0 18 13 +- 22 7 +- 15 2
7501 16 Mar 01 11:38 LAG1 7 0 6 -8 +- 47 12 +- 76 1
7501 16 Mar 01 14:49 LAG1 16 0 5 -4 +- 24 1 +- 11 1
7501 16 Mar 01 18:49 LAG2 2 0 4 4 +- 75 -11 +- 214 0
7501 17 Mar 01 07:01 LAG1 14 0 18 -16 +- 26 12 +- 24 1
7501 17 Mar 01 07:33 LAG2 6 0 28 -15 +- 206 27 +- 129 1
7501 17 Mar 01 17:21 LAG1 4 0 7 22 +- 182 -18 +- 190 2
7501 17 Mar 01 20:35 LAG2 17 0 17 -12 +- 23 5 +- 13 5
7501 21 Mar 01 07:29 LAG2 15 2 27 0 +- 27 23 +- 23 2

Station 7806 (Metsahovi) (Position fixed, acc. 30 mm)
7806 19 Mar 01 20:41 LAG1 17 0 9 -3 +- 35 0 +- 17 9
7806 20 Mar 01 00:13 LAG1 17 0 11 -11 +- 35 4 +- 20 4
7806 20 Mar 01 18:30 LAG2 4 0 33 -61 +- 124 50 +- 125 12
7806 20 Mar 01 19:23 LAG1 15 0 25 -28 +- 38 7 +- 23 7
7806 20 Mar 01 22:47 LAG1 20 0 11 -2 +- 29 5 +- 15 5
7806 21 Mar 01 02:19 LAG1 17 0 34 -27 +- 30 12 +- 20 10
7806 22 Mar 01 18:37 LAG2 10 0 18 7 +- 49 10 +- 54 9
7806 22 Mar 01 20:07 LAG1 19 0 10 -10 +- 32 2 +- 17 4
7806 22 Mar 01 23:31 LAG1 19 0 9 -1 +- 28 3 +- 16 6
7806 23 Mar 01 18:37 LAG1 22 0 33 -26 +- 26 -7 +- 13 13
7806 23 Mar 01 22:13 LAG1 18 0 13 -10 +- 30 0 +- 17 7
7806 24 Mar 01 01:43 LAG1 19 0 17 -4 +- 29 8 +- 17 8
7806 24 Mar 01 18:50 LAG2 11 0 19 0 +- 55 12 +- 49 12
7806 24 Mar 01 20:53 LAG1 19 0 26 -20 +- 30 -5 +- 17 7

Station 7810 (Zimmerwald) (Position fixed, acc. 60 mm)
7810 15 Mar 01 19:29 LAG1 12 0 32 -6 +- 152 -12 +- 71 2
7810 15 Mar 01 19:56 LAG2 3 0 21 -33 +- 207 7 +- 99 2
7810 15 Mar 01 22:45 LAG1 15 0 16 14 +- 61 -11 +- 41 5
7810 18 Mar 01 06:33 LAG1 3 0 99 -96 +- 659 3 +- 780 1

Station 7811 (Borowiec) (Position fixed, acc. 60 mm)
7811 15 Mar 01 19:28 LAG1 4 0 40 -41 +- 534 0 +- 310 4
7811 15 Mar 01 19:43 LAG2 15 0 59 -58 +- 51 5 +- 44 4
7811 16 Mar 01 02:05 LAG1 13 0 29 2 +- 56 -20 +- 42 12
7811 20 Mar 01 19:26 LAG1 12 0 42 -36 +- 59 -10 +- 47 8
7811 20 Mar 01 22:47 LAG1 4 0 31 -106 +- 869 -66 +- 429 1
7811 21 Mar 01 02:17 LAG1 16 0 26 -4 +- 50 -16 +- 32 8
7811 21 Mar 01 18:11 LAG1 10 0 28 21 +- 90 -23 +- 65 16
7811 21 Mar 01 20:23 LAG2 14 0 67 -65 +- 54 23 +- 54 8
7811 21 Mar 01 21:33 LAG1 14 0 55 -51 +- 56 -6 +- 41 4
7811 22 Mar 01 00:57 LAG1 14 0 16 2 +- 53 -11 +- 38 3

Station 7824 (San Fernando) (Position fixed, acc. 40 mm)
7824 15 Mar 01 20:03 LAG2 2 0 94 231 +-1299 -112 +-1062 0
7824 16 Mar 01 21:59 LAG2 2 0 89 96 +- 296 14 +- 584 0
7824 19 Mar 01 20:09 LAG2 11 0 88 86 +- 45 3 +- 30 16
7824 19 Mar 01 21:03 LAG1 8 0 117 113 +- 53 -25 +- 70 34*CHK*
7824 20 Mar 01 22:35 LAG2 7 0 9 -20 +- 220 18 +- 150 4
7824 21 Mar 01 20:55 LAG2 2 0 329 -1608 +-4108 842 +-1787 0
7824 21 Mar 01 21:45 LAG1 5 0 217 195 +- 128 -25 +- 135 16*CHK*
7824 22 Mar 01 20:31 LAG1 13 0 25 9 +- 57 10 +- 37 6
7824 22 Mar 01 22:31 LAG2 7 0 46 61 +- 105 22 +- 122 6
7824 23 Mar 01 03:07 LAG1 13 0 25 24 +- 41 -2 +- 33 6
7824 23 Mar 01 20:37 LAG2 3 0 42 39 +- 89 5 +- 47 17
7824 23 Mar 01 22:45 LAG1 3 0 68 -31 +- 589 88 +- 588 36
7824 24 Mar 01 21:19 LAG1 2 0 32 -126 +- 431 -326 +-1056 0
7824 24 Mar 01 22:39 LAG2 12 0 58 64 +- 49 30 +- 46 16

Station 7832 (Riyad) (Position solved, acc. 20 mm)
7832 16 Mar 01 09:33 LAG2 20 0 27 -21 +- 25 -15 +- 17 8
7832 18 Mar 01 10:01 LAG2 15 0 5 0 +- 32 4 +- 27 2
7832 18 Mar 01 14:13 LAG2 19 0 17 -6 +- 24 -13 +- 24 7
7832 18 Mar 01 15:15 LAG1 15 0 29 -31 +- 34 17 +- 19 6
7832 20 Mar 01 12:23 LAG1 14 1 40 38 +- 32 3 +- 35 14
7832 20 Mar 01 14:28 LAG2 18 1 98 46 +- 27 -65 +- 26 66
7832 20 Mar 01 15:49 LAG1 18 0 18 6 +- 25 -2 +- 14 16
7832 24 Mar 01 10:33 LAG2 22 0 33 31 +- 23 9 +- 18 7

Station 7836 (Potsdam) (Position fixed, acc. 30 mm)
7836 15 Mar 01 15:54 LAG2 4 0 14 -15 +- 130 1 +- 180 3
7836 15 Mar 01 19:11 LAG1 2 0 8 -15 +-1780 -3 +- 917 0
7836 15 Mar 01 19:59 LAG2 4 0 27 -66 +- 201 52 +- 205 13
7836 15 Mar 01 22:47 LAG1 2 0 11 18 +- 369 13 +- 675 0
7836 20 Mar 01 19:45 LAG1 5 0 10 -35 +- 341 12 +- 169 2
7836 20 Mar 01 22:55 LAG1 14 0 7 -4 +- 36 -2 +- 26 3
7836 21 Mar 01 02:39 LAG1 4 0 8 31 +- 350 -17 +- 211 6

Station 7837 (Shanghai Observatory) (Position fixed, acc. 50 mm)
7837 21 Mar 01 10:59 LAG1 5 0 48 -51 +- 273 2 +- 190 2
7837 21 Mar 01 13:07 LAG2 6 0 60 -81 +- 158 -19 +- 130 6

Station 7838 (Simosato Observatory) (Position fixed, acc. 30 mm)
7838 18 Mar 01 10:39 LAG2 8 0 19 -61 +- 259 -21 +- 124 6
7838 18 Mar 01 11:09 LAG1 18 0 22 -19 +- 30 4 +- 19 11

Station 7839 (Graz) (Position fixed, acc. 10 mm)
7839 15 Mar 01 04:05 LAG1 3 0 14 -760 +-8367 247 +-2773 0
7839 15 Mar 01 15:45 LAG1 14 0 24 0 +- 39 15 +- 25 1
7839 15 Mar 01 15:47 LAG2 14 0 28 7 +- 31 16 +- 22 2
7839 15 Mar 01 19:43 LAG2 9 0 3 -1 +- 32 0 +- 28 2
7839 15 Mar 01 23:01 LAG1 8 0 33 49 +- 233 -6 +- 98 1
7839 15 Mar 01 23:37 LAG2 14 0 47 -46 +- 25 4 +- 40 5
7839 16 Mar 01 02:03 LAG1 14 0 43 42 +- 25 -8 +- 16 3
7839 16 Mar 01 09:53 LAG2 13 0 30 45 +- 40 -20 +- 25 3
7839 16 Mar 01 13:47 LAG2 13 0 16 10 +- 30 5 +- 20 3
7839 16 Mar 01 14:25 LAG1 7 0 13 1 +- 76 15 +- 99 2
7839 16 Mar 01 17:37 LAG1 21 0 24 18 +- 21 -8 +- 9 3
7839 16 Mar 01 21:05 LAG1 19 0 43 41 +- 26 -1 +- 14 4
7839 16 Mar 01 21:47 LAG2 10 0 21 -22 +- 31 -5 +- 34 1
7839 17 Mar 01 00:31 LAG1 18 0 38 32 +- 22 -7 +- 9 6
7839 17 Mar 01 03:59 LAG1 22 0 17 7 +- 21 -6 +- 10 3
7839 18 Mar 01 18:03 LAG2 14 0 15 9 +- 27 12 +- 22 1
7839 18 Mar 01 18:31 LAG1 6 0 7 12 +- 210 2 +- 91 0
7839 23 Mar 01 18:38 LAG1 24 0 17 -15 +- 19 -2 +- 8 5
7839 23 Mar 01 20:28 LAG2 17 0 37 -16 +- 23 23 +- 15 4
7839 23 Mar 01 22:09 LAG1 12 0 16 0 +- 28 -7 +- 12 4

Station 7840 (Herstmonceux) (Position fixed, acc. 20 mm)
7840 19 Mar 01 16:11 LAG2 11 0 12 -4 +- 45 9 +- 29 2
7840 19 Mar 01 17:11 LAG1 15 0 16 15 +- 30 -1 +- 22 3
7840 19 Mar 01 20:07 LAG2 7 0 13 -11 +- 75 2 +- 72 1
7840 19 Mar 01 21:07 LAG1 7 0 5 2 +- 141 -3 +- 75 2
7840 22 Mar 01 14:41 LAG2 8 0 6 -22 +- 145 10 +- 77 2

Station 7845 (Grasse) (Position fixed, acc. 20 mm)
7845 15 Mar 01 00:01 LAG1 19 0 27 -28 +- 29 2 +- 17 5
7845 15 Mar 01 19:33 LAG2 10 0 31 -55 +- 133 -12 +- 66 3
7845 15 Mar 01 22:39 LAG1 20 0 19 -10 +- 25 11 +- 15 4
7845 16 Mar 01 01:53 LAG1 22 0 20 -16 +- 23 -4 +- 10 6
7845 19 Mar 01 11:43 LAG2 26 0 15 -11 +- 21 0 +- 10 10
7845 19 Mar 01 16:05 LAG2 7 0 50 -54 +- 104 -3 +- 85 2
7845 19 Mar 01 17:25 LAG1 16 0 23 -22 +- 35 16 +- 20 6

Station 7849 (Mount Stromlo) (Position fixed, acc. 10 mm)
7849 15 Mar 01 08:56 LAG1 7 0 35 -36 +- 40 4 +- 56 3
7849 16 Mar 01 01:45 LAG2 7 0 11 -3 +- 38 -22 +- 94 3
7849 17 Mar 01 06:01 LAG1 8 0 18 15 +- 39 1 +- 17 3
7849 17 Mar 01 17:55 LAG2 4 0 36 5 +- 183 24 +- 145 3
7849 17 Mar 01 18:31 LAG1 11 0 14 -11 +- 29 -6 +- 26 5
7849 18 Mar 01 15:37 LAG2 6 0 16 -5 +- 90 12 +- 100 1
7849 18 Mar 01 21:05 LAG1 6 0 14 -27 +- 306 5 +- 130 1
7849 18 Mar 01 23:57 LAG2 3 0 27 16 +- 792 31 +- 567 2
7849 19 Mar 01 22:49 LAG1 14 0 18 -4 +- 25 -14 +- 21 3
7849 21 Mar 01 07:35 LAG1 16 0 23 -20 +- 24 5 +- 17 3
7849 21 Mar 01 13:59 LAG2 7 0 24 -15 +- 37 23 +- 57 1
7849 23 Mar 01 08:51 LAG1 4 0 7 6 +- 426 0 +- 289 2
7849 24 Mar 01 16:27 LAG2 10 0 7 -3 +- 35 11 +- 50 2
--------------------------------------------------------------------------------



Distribution of daytime, nighttime and twilight passes since Nov 1, 2000:
--------------------------------------------------------------------------
Station System Period Number of Passes
LAGEOS-1 LAGEOS-2
Day/Night/Twil. Day/Night/Twil. Total
--------------------------------------------------------------------------
1824 KIEVLA 010123 - 010323 0/ 9/ 0 0/ 5/ 0 14
1864 MD2LAS 001112 - 001223 0/ 5/ 0 0/ 8/ 0 13
1873 SIMLAS 001101 - 010216 0/ 4/ 0 0/ 11/ 0 15
1884 RIGLAS 001102 - 010321 0/ 29/ 0 0/ 15/ 0 44
1893 CRMLAS 001107 - 001202 0/ 5/ 0 0/ 3/ 0 8
7080 MLRS25 001102 - 010326 36/ 79/ 7 37/ 76/ 9 244
7090 ML0514 001101 - 010326 87/107/ 18 100/101/ 9 422
7105 ML0725 001101 - 010326 32/177/ 11 29/145/ 11 405
7110 ML0414 001101 - 010326 23/160/ 11 17/123/ 8 342
7124 ML0819 001107 - 010208 0/ 25/ 0 0/ 16/ 2 43
7210 HOLLAS 001115 - 010323 3/ 39/ 1 0/ 34/ 1 78
7231 WUHA01 001103 - 001205 0/ 8/ 0 0/ 9/ 0 17
7237 CHALAS 001102 - 010325 0/102/ 0 0/ 79/ 0 181
7249 BEJLAS 001101 - 010317 0/ 36/ 0 0/ 31/ 0 67
7335 KASLAS 001108 - 010118 4/ 16/ 1 5/ 15/ 1 42
7339 TATLAS 001107 - 010216 21/ 28/ 0 8/ 26/ 3 86
7403 TLRS3 001101 - 010322 0/ 11/ 0 1/ 10/ 0 22
7501 ML0616 001101 - 010321 26/ 31/ 6 23/ 16/ 1 103
7806 METLAS 010209 - 010326 0/ 30/ 0 0/ 8/ 0 38
7810 ZIMLAT 001102 - 010325 12/ 20/ 1 5/ 14/ 2 54
7811 POLLAS 001103 - 010322 0/ 75/ 0 0/ 44/ 0 119
7820 YSLR01 001101 - 010313 0/132/ 1 0/162/ 0 295
7824 SPNLAS 001101 - 010325 2/ 73/ 2 2/ 79/ 2 160
7831 HELLAS 001101 - 001104 0/ 3/ 0 0/ 1/ 0 4
7832 SALRO 001211 - 010326 6/ 15/ 3 28/ 9/ 2 63
7835 GRASSE 001101 - 010227 9/ 87/ 1 9/ 71/ 2 179
7836 GFZLAS 001101 - 010321 5/ 80/ 5 3/ 58/ 2 153
7837 CHILAS 001102 - 010321 0/ 57/ 0 0/ 53/ 0 110
7838 SHOLAS 001107 - 010318 2/ 92/ 0 7/ 91/ 2 194
7839 AUSLAS 001102 - 010325 19/ 83/ 4 21/ 62/ 4 193
7840 RGOLAS 001102 - 010322 30/127/ 7 19/102/ 8 293
7845 GRASLL 001103 - 010326 12/ 31/ 1 20/ 26/ 1 91
7849 MSLO01 001101 - 010326 151/ 49/ 19 137/ 42/ 11 409
7939 SAO102 001101 - 001121 0/ 6/ 0 0/ 2/ 0 8
8834 WLRS01 001101 - 010116 4/ 17/ 0 3/ 25/ 2 51
--------------------------------------------------------------------------


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)
--------------------------------------------------------------
010319.0 57.4 +/- 0.1 488.7 +/- 0.1 -31962.38 +/- 0.01
010322.0 65.0 +/- 0.1 490.1 +/- 0.1 -31963.84 +/- 0.01
--------------------------------------------------------------



D. COMMENTS

1. This is a QLDAC analysis report in a new style. Although our old report
served quite well for observation campaigns, we have received many requests
to adjust our report to the current situation (i.e. a permanent global SLR
network with few mobile systems), and to spend more attention to the quality
of the data taken by the global network.
The most important element of the report is the table with statistics for
each individual data pass. Although the numbers will speak for themselves,
we must give a warning here that some of you may be disappointed to see that
their station appears to be suffering from a data problem. However, we are
using a model for station positions that is already 7 years old, and which
may be responsible for errors in the station position in the order of 1-5 cm.
We intend to introduce a new coordinates solution in the course of this
millennium.
Readers of this report are invited to provide us suggestions for further
improvements.


”/DGFI3/home/slreport/mbox” complete
From: Ron Noomen

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