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SLR-Report No.78

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Date:2000-05-09 14:45:00
Sender:Ron Noomen, DEOS, Delft, The Netherlands <Ron Noomen <Ron.Noomen@lr.tudelft.nl>>
Subject:[SLR-Report] No. 78: Delft QL Report Week 19, 2000
Author:Ron Noomen, DEOS, Delft, The Netherlands
Content:********************************************************************************
SLR Electronic Report 2000-05-09 14:45:00 UTC Message No. 78
********************************************************************************

Author: Ron Noomen, DEOS, Delft, The Netherlands
Subject: Delft QL Report Week 19, 2000


WEGENER-2 IERS


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


WEEK 19, 2000


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, May 8, 2000.
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@lr.tudelft.nl


A. PASS SUMMARY

The table below gives an overview of the ranging data both on LAGEOS-1 and
LAGEOS-2, received by the Quick-Look Data Analysis Center (QLDAC) on Tue,
May 9, 2000. All data were obtained through 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) 000426 - 000430 1 3
1884 Riga, Latvia 000429 - 000505 - 6
7080 McDonald Obs., Fort Davis, TX 000502 - 000508 7 6
7090 Yarragadee, Australia 000501 - 000508 18 13
7105 Greenbelt, Maryland 000502 - 000508 5 10
7110 Monument Peak, California 000502 - 000508 11 12
7237 Changchun, China 000501 - 000507 - 5
7249 Beijing, China 000429 - 000506 - 8
7335 Kashima, Japan 000503 - 000508 4 -
7337 Miura, Japan 000503 - 000508 2 -
7339 Tateyama, Japan 000503 - 000508 6 -
7403 Arequipa, Peru (TLRS-3) 000503 - 000503 1 1
7806 Metsahovi, Finland 000506 - 000506 - 1
7810 Zimmerwald, Switzerland 000430 - 000505 2 6
7811 Borowiec, Poland 000429 - 000505 - 6
7824 San Fernando, Spain 000504 - 000504 1 1
7835 Grasse, France 000429 - 000503 2 6
7836 Potsdam, Germany 000428 - 000504 1 6
7837 Shanghai Observatory, China 000502 - 000507 3 10
7838 Simosato Observatory, Japan 000501 - 000501 - 1
7839 Graz, Austria 000503 - 000503 3 2
7840 Herstmonceux, United Kingdom 000429 - 000507 13 8
7845 Grasse, France (LLR) 000502 - 000503 2 1
7849 Mount Stromlo, Australia 000430 - 000506 1 5
7939 Matera, Italy 000504 - 000504 - 1
8834 Wettzell, Germany 000501 - 000507 9 9
------ ------ --- ---
TOTAL 000426 - 000508 92 127
------------------------------------------------------------------------------


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, Apr 27, 2000, to Sat, May 6, 2000. 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 21 25
Number of Passes 119/118 151/150
Number of Normal Points 1160/1143 1886/1842
RMS of Fit (mm) 33 40
-----------------------------------------------------------------------


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. Bias
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 Apr 00 15:42 Lag1 3 0 16 14 +- 492 -2 +- 563 1
1864 29 Apr 00 17:49 Lag2 3 0 34 -194 +-4089 -95 +-2383 5
1864 30 Apr 00 19:54 Lag2 11 0 91 -86 +- 182 4 +- 116 29

Station 1884 (Riga) (Position fixed, acc. 100 mm)
1884 27 Apr 00 21:31 Lag2 17 0 77 72 +- 76 -30 +- 61 11
1884 29 Apr 00 21:43 Lag2 17 0 120 -116 +- 75 8 +- 62 24
1884 1 May 00 21:55 Lag2 18 0 45 -6 +- 73 32 +- 55 10
1884 2 May 00 20:10 Lag2 14 0 106 -107 +- 85 7 +- 88 16
1884 3 May 00 00:03 Lag2 20 0 74 -65 +- 70 33 +- 49 11
1884 4 May 00 20:19 Lag2 17 0 20 18 +- 75 -2 +- 65 8
1884 5 May 00 00:15 Lag2 11 0 53 -15 +- 132 29 +- 96 6

Station 7080 (McDonald Obs.) (Position fixed, acc. 20 mm)
7080 28 Apr 00 17:25 Lag2 4 0 73 -69 +- 216 -5 +- 291 8
7080 29 Apr 00 17:42 Lag1 4 0 32 33 +- 74 -5 +- 149 8
7080 30 Apr 00 00:09 Lag1 8 0 11 14 +- 64 3 +- 55 2
7080 30 Apr 00 23:00 Lag1 6 0 21 22 +- 65 -1 +- 89 4
7080 1 May 00 02:11 Lag1 8 0 25 15 +- 144 -5 +- 75 3
7080 1 May 00 03:03 Lag2 5 0 38 25 +- 171 -15 +- 194 1
7080 2 May 00 04:59 Lag2 16 0 19 5 +- 27 10 +- 16 4
7080 2 May 00 09:14 Lag2 17 0 6 1 +- 26 -4 +- 28 4
7080 2 May 00 13:27 Lag2 9 0 18 4 +- 114 -8 +- 75 3
7080 2 May 00 13:47 Lag1 7 0 18 35 +- 181 -8 +- 89 2
7080 3 May 00 07:14 Lag2 13 0 16 15 +- 29 -3 +- 23 3
7080 3 May 00 11:45 Lag2 15 0 44 -5 +- 44 -29 +- 33 13
7080 3 May 00 12:19 Lag1 5 0 45 29 +- 115 24 +- 162 2
7080 4 May 00 18:00 Lag1 6 0 9 -8 +- 147 0 +- 106 2
7080 5 May 00 16:30 Lag1 8 0 10 -8 +- 38 -4 +- 49 2

Station 7090 (Yarragadee) (Position fixed, acc. 10 mm)
7090 27 Apr 00 09:11 Lag2 4 0 18 58 +- 206 49 +- 227 0
7090 27 Apr 00 11:11 Lag1 20 0 45 -33 +- 21 15 +- 13 6
7090 27 Apr 00 13:13 Lag2 21 0 11 0 +- 22 -7 +- 14 2
7090 27 Apr 00 14:49 Lag1 9 0 27 33 +- 39 21 +- 43 1
7090 28 Apr 00 11:07 Lag2 3 0 9 82 +-2832 28 +-1118 1
7090 28 Apr 00 20:03 Lag1 17 0 53 -50 +- 23 17 +- 17 3
7090 28 Apr 00 23:25 Lag1 10 0 16 14 +- 83 -1 +- 42 3
7090 29 Apr 00 00:57 Lag2 13 0 56 28 +- 26 -38 +- 20 2
7090 29 Apr 00 05:08 Lag2 11 0 25 -1 +- 34 -20 +- 27 1
7090 30 Apr 00 07:15 Lag2 22 0 8 0 +- 20 7 +- 18 0
7090 30 Apr 00 10:37 Lag1 14 0 33 -20 +- 35 11 +- 25 1
7090 30 Apr 00 11:25 Lag2 16 0 25 23 +- 26 12 +- 15 5
7090 30 Apr 00 14:09 Lag1 19 0 19 19 +- 22 3 +- 14 2
7090 1 May 00 09:23 Lag1 9 0 33 -31 +- 32 11 +- 43 2
7090 1 May 00 09:45 Lag2 16 0 9 7 +- 31 2 +- 23 1
7090 1 May 00 12:59 Lag1 15 0 13 2 +- 28 7 +- 18 1
7090 1 May 00 13:35 Lag2 16 0 12 -9 +- 24 5 +- 15 0
7090 1 May 00 16:21 Lag1 10 0 11 11 +- 30 1 +- 44 1
7090 1 May 00 19:31 Lag1 11 0 13 -13 +- 35 0 +- 36 1
7090 2 May 00 07:34 Lag2 20 0 21 -19 +- 22 -4 +- 20 4
7090 2 May 00 11:23 Lag1 15 0 18 -13 +- 37 3 +- 21 1
7090 2 May 00 12:03 Lag2 8 0 21 22 +- 71 0 +- 56 0
7090 2 May 00 14:57 Lag1 12 0 5 2 +- 34 -3 +- 30 1
7090 2 May 00 18:23 Lag1 7 0 4 -2 +- 36 6 +- 78 1
7090 2 May 00 21:39 Lag1 15 0 8 -6 +- 25 0 +- 17 4
7090 3 May 00 01:43 Lag2 10 0 26 33 +- 75 -36 +- 52 1
7090 3 May 00 05:41 Lag2 17 0 47 -24 +- 31 -23 +- 26 2
7090 4 May 00 11:49 Lag2 8 0 8 63 +- 294 26 +- 126 1
7090 4 May 00 12:21 Lag1 12 0 35 -27 +- 28 13 +- 21 4
7090 4 May 00 15:49 Lag1 11 0 34 -34 +- 29 -3 +- 36 1
7090 4 May 00 19:01 Lag1 13 0 20 -18 +- 26 -8 +- 28 3
7090 5 May 00 09:57 Lag2 23 0 10 -10 +- 20 0 +- 12 1
7090 5 May 00 10:51 Lag1 10 0 28 -4 +- 31 13 +- 15 3
7090 5 May 00 14:03 Lag2 4 0 11 73 +- 444 42 +- 296 0
7090 5 May 00 14:25 Lag1 14 0 59 -58 +- 26 2 +- 23 4
7090 5 May 00 17:55 Lag1 4 0 13 -12 +- 50 -3 +- 195 1
7090 6 May 00 08:01 Lag2 22 0 43 -10 +- 20 32 +- 15 3
7090 6 May 00 09:41 Lag1 13 0 33 34 +- 30 -2 +- 32 2
7090 6 May 00 12:04 Lag2 16 0 49 49 +- 24 0 +- 13 6
7090 6 May 00 13:01 Lag1 13 0 33 -42 +- 40 -8 +- 25 5
7090 6 May 00 16:35 Lag1 7 0 14 -14 +- 37 -11 +- 77 2

Station 7105 (Greenbelt) (Position fixed, acc. 10 mm)
7105 30 Apr 00 00:19 Lag1 11 0 30 -28 +- 61 -1 +- 36 2
7105 30 Apr 00 01:23 Lag2 6 0 52 61 +- 77 -15 +- 121 1
7105 30 Apr 00 05:05 Lag2 5 0 40 0 +- 48 22 +- 28 2
7105 30 Apr 00 09:17 Lag2 16 2 21 14 +- 25 14 +- 26 1
7105 30 Apr 00 19:27 Lag1 3 0 41 34 +- 123 -16 +- 271 1
7105 30 Apr 00 22:43 Lag1 10 0 11 4 +- 30 -5 +- 15 4
7105 1 May 00 02:21 Lag1 5 0 39 -46 +- 137 -9 +- 182 0
7105 1 May 00 03:07 Lag2 15 0 16 10 +- 29 4 +- 15 3
7105 2 May 00 23:33 Lag1 7 0 21 -21 +- 66 0 +- 58 1
7105 3 May 00 03:35 Lag2 16 0 15 -10 +- 38 13 +- 23 3
7105 3 May 00 07:25 Lag2 25 0 14 7 +- 19 7 +- 13 3
7105 3 May 00 11:47 Lag2 12 0 26 -19 +- 28 -8 +- 19 4
7105 4 May 00 01:31 Lag2 1 0 33 0 +- 0 0 +- 0 0
7105 4 May 00 02:03 Lag1 4 0 59 -73 +- 154 13 +- 134 0
7105 4 May 00 05:35 Lag2 16 0 43 4 +- 28 24 +- 17 3
7105 4 May 00 09:47 Lag2 16 0 6 5 +- 24 -1 +- 23 2
7105 4 May 00 14:11 Lag1 14 1 21 4 +- 31 -15 +- 21 4

Station 7110 (Monument Peak) (Position fixed, acc. 10 mm)
7110 27 Apr 00 17:07 Lag1 4 0 7 2 +- 318 3 +- 188 0
7110 30 Apr 00 03:37 Lag1 17 0 26 -17 +- 23 -11 +- 13 3
7110 30 Apr 00 04:53 Lag2 9 0 17 -2 +- 39 -9 +- 24 3
7110 30 Apr 00 08:53 Lag2 12 0 24 -12 +- 34 -7 +- 19 5
7110 30 Apr 00 12:49 Lag1 5 0 27 -28 +- 47 3 +- 174 0
7110 30 Apr 00 16:21 Lag1 3 0 24 -21 +- 191 4 +- 255 0
7110 2 May 00 04:37 Lag1 3 0 3 -20 +- 438 -26 +- 517 0
7110 2 May 00 04:55 Lag2 17 0 19 -18 +- 23 0 +- 14 4
7110 2 May 00 09:05 Lag2 19 0 26 -16 +- 22 -15 +- 18 4
7110 2 May 00 17:01 Lag1 5 0 36 -37 +- 192 -1 +- 122 4
7110 3 May 00 03:01 Lag1 16 0 23 -20 +- 24 -1 +- 14 9
7110 3 May 00 07:03 Lag2 26 0 25 -14 +- 19 -11 +- 11 1
7110 3 May 00 11:25 Lag2 17 0 54 -38 +- 23 -35 +- 23 3
7110 4 May 00 02:18 Lag1 4 0 3 -52 +-1053 20 +- 384 1
7110 4 May 00 05:09 Lag2 11 0 47 -22 +- 43 15 +- 25 4
7110 4 May 00 09:19 Lag2 19 0 34 11 +- 25 -28 +- 19 5
7110 4 May 00 13:41 Lag2 13 1 41 -40 +- 30 -41 +- 33 3
7110 4 May 00 14:41 Lag1 6 0 24 -7 +- 278 -7 +- 127 1
7110 5 May 00 03:33 Lag2 10 0 54 -55 +- 34 4 +- 49 1
7110 5 May 00 04:07 Lag1 9 0 36 -40 +- 37 15 +- 50 2
7110 5 May 00 07:17 Lag2 26 0 31 28 +- 19 -9 +- 11 9
7110 5 May 00 11:37 Lag2 19 0 93 -24 +- 23 -54 +- 15 8
7110 5 May 00 16:01 Lag2 2 0 13 11 +- 167 -11 +- 958 0
7110 5 May 00 16:31 Lag1 10 1 22 -21 +- 32 4 +- 22 2

Station 7124 (Papeete) (Position fixed, acc. 10 mm)
7124 27 Apr 00 04:07 Lag1 10 0 38 -48 +- 38 30 +- 36 2
7124 27 Apr 00 05:47 Lag2 16 0 10 6 +- 24 5 +- 19 5
7124 28 Apr 00 06:11 Lag1 16 0 12 -9 +- 26 2 +- 16 10

Station 7237 (Changchun) (Position fixed, acc. 50 mm)
7237 27 Apr 00 13:51 Lag2 2 0 78 -176 +-5750 -117 +-2639 0
7237 27 Apr 00 18:21 Lag2 2 0 36 -245 +-1584 267 +-1980 0
7237 28 Apr 00 16:01 Lag2 18 0 49 -21 +- 41 -34 +- 30 8
7237 30 Apr 00 12:29 Lag2 5 2 86 175 +- 266 248 +- 609 15
7237 1 May 00 14:17 Lag2 15 0 16 -9 +- 55 -10 +- 37 9
7237 1 May 00 18:37 Lag2 7 0 38 -3 +- 75 -10 +- 67 36
7237 6 May 00 12:51 Lag2 15 0 62 -20 +- 48 -43 +- 31 6
7237 6 May 00 17:05 Lag2 18 0 47 0 +- 45 -36 +- 35 9

Station 7249 (Beijing) (Position fixed, acc. 50 mm)
7249 29 Apr 00 18:17 Lag2 12 0 29 -27 +- 54 15 +- 63 16
7249 30 Apr 00 16:15 Lag2 11 0 49 -43 +- 57 11 +- 61 6
7249 1 May 00 14:19 Lag2 7 1 139 246 +- 169 261 +- 145 50
7249 1 May 00 18:33 Lag2 6 0 33 -24 +- 80 32 +- 182 3
7249 4 May 00 16:43 Lag2 7 0 65 -18 +- 91 -54 +- 87 45
7249 5 May 00 14:59 Lag2 8 0 13 -8 +- 114 0 +- 97 9
7249 5 May 00 18:55 Lag2 12 0 21 -17 +- 58 2 +- 66 10
7249 6 May 00 17:03 Lag2 7 0 51 -44 +- 78 -9 +- 62 5

Station 7335 (Kashima) (Position fixed, acc. 20 mm)
7335 28 Apr 00 00:10 Lag1 14 0 27 25 +- 30 15 +- 21 2
7335 3 May 00 00:27 Lag1 3 0 81 -111 +- 689 -16 +- 377 0
7335 4 May 00 02:37 Lag1 10 0 22 -20 +- 35 -4 +- 43 4

Station 7337 (Miura) (Position fixed, acc. 20 mm)
7337 27 Apr 00 08:27 Lag1 7 0 22 -31 +- 58 20 +- 62 4
7337 3 May 00 07:13 Lag1 13 0 10 -9 +- 31 4 +- 25 3

Station 7339 (Tateyama) (Position fixed, acc. 20 mm)
7339 27 Apr 00 11:59 Lag1 8 0 33 30 +- 46 3 +- 81 9
7339 28 Apr 00 00:09 Lag1 14 0 27 30 +- 35 18 +- 22 4
7339 28 Apr 00 03:43 Lag1 6 0 31 32 +- 48 23 +- 100 12
7339 28 Apr 00 06:55 Lag1 10 0 21 -16 +- 34 6 +- 22 4
7339 3 May 00 00:27 Lag1 3 0 72 -137 +- 710 -33 +- 370 0
7339 3 May 00 07:13 Lag1 14 0 9 -4 +- 31 -2 +- 23 5
7339 4 May 00 02:36 Lag1 5 0 23 -28 +- 84 -12 +- 123 8
7339 4 May 00 05:59 Lag1 7 0 15 -2 +- 43 -21 +- 68 6

Station 7403 (Arequipa) (Position fixed, acc. 10 mm)
7403 27 Apr 00 02:22 Lag2 3 0 34 -36 +- 58 -18 +- 80 0
7403 27 Apr 00 09:56 Lag1 10 0 10 -10 +- 35 -7 +- 29 3
7403 3 May 00 03:00 Lag2 5 0 14 -12 +- 79 2 +- 118 5
7403 3 May 00 12:39 Lag1 4 0 64 34 +- 125 24 +- 96 0

Station 7806 (Metsahovi) (Position fixed, acc. 30 mm)
7806 6 May 00 20:35 Lag2 16 0 49 -35 +- 31 33 +- 28 5

Station 7810 (Zimmerwald) (Position fixed, acc. 60 mm)
7810 30 Apr 00 23:43 Lag2 18 0 55 -20 +- 49 36 +- 33 17
7810 1 May 00 22:05 Lag2 11 0 56 -8 +- 142 41 +- 92 10
7810 2 May 00 01:43 Lag2 20 0 66 -5 +- 46 45 +- 33 8
7810 2 May 00 23:47 Lag2 19 0 74 -5 +- 46 40 +- 25 6
7810 3 May 00 03:53 Lag2 20 0 21 18 +- 49 8 +- 32 12
7810 4 May 00 17:09 Lag1 7 0 98 -129 +- 106 70 +- 80 35
7810 4 May 00 20:42 Lag1 3 0 37 -42 +- 223 -13 +- 449 7
7810 5 May 00 00:19 Lag2 18 0 42 -12 +- 72 30 +- 45 13

Station 7811 (Borowiec) (Position fixed, acc. 60 mm)
7811 27 Apr 00 21:29 Lag2 17 0 35 -2 +- 49 -28 +- 41 9
7811 28 Apr 00 01:27 Lag2 10 0 19 -4 +- 105 11 +- 86 8
7811 29 Apr 00 21:44 Lag2 14 0 19 17 +- 55 0 +- 52 9
7811 30 Apr 00 01:41 Lag2 18 0 45 13 +- 47 33 +- 37 3
7811 1 May 00 01:41 Lag2 18 18 0 0 +- 0 0 +- 0 0 Apr30
7811 3 May 00 22:12 Lag2 11 0 21 7 +- 63 16 +- 56 4
7811 4 May 00 20:15 Lag2 15 0 18 -16 +- 52 -10 +- 50 5
7811 5 May 00 00:13 Lag2 19 0 35 5 +- 46 25 +- 34 2
7811 5 May 00 22:19 Lag2 18 0 59 16 +- 47 42 +- 35 7

Station 7820 (Kunming) (Position solved, acc. 80 mm)
7820 27 Apr 00 17:49 Lag2 15 0 10 0 +- 76 0 +- 71 10

Station 7824 (San Fernando) (Position fixed, acc. 40 mm)
7824 4 May 00 20:01 Lag2 12 0 26 -20 +- 50 -17 +- 62 19
7824 4 May 00 20:32 Lag1 13 0 54 53 +- 42 -13 +- 43 12

Station 7835 (Grasse) (Position fixed, acc. 30 mm)
7835 29 Apr 00 20:13 Lag1 7 0 44 5 +- 198 -26 +- 135 2
7835 29 Apr 00 21:27 Lag2 21 0 15 5 +- 33 -7 +- 19 10
7835 30 Apr 00 01:29 Lag2 28 0 33 0 +- 24 19 +- 14 4
7835 30 Apr 00 18:51 Lag1 17 0 36 -2 +- 31 -21 +- 19 3
7835 30 Apr 00 19:51 Lag2 5 0 29 23 +- 89 -17 +- 199 0
7835 30 Apr 00 23:35 Lag2 18 0 24 -6 +- 30 12 +- 20 11
7835 2 May 00 06:11 Lag2 3 0 6 8 +- 157 29 +- 380 3
7835 3 May 00 08:29 Lag2 4 0 11 -24 +- 394 12 +- 350 3

Station 7836 (Potsdam) (Position fixed, acc. 30 mm)
7836 28 Apr 00 23:27 Lag2 16 0 18 -16 +- 33 -11 +- 24 5
7836 29 Apr 00 21:41 Lag2 17 0 4 2 +- 31 0 +- 24 4
7836 30 Apr 00 19:00 Lag1 13 0 26 -14 +- 35 -19 +- 34 6
7836 30 Apr 00 19:57 Lag2 5 0 24 10 +- 95 -29 +- 183 1
7836 3 May 00 22:23 Lag2 9 0 7 -15 +- 106 12 +- 76 2
7836 4 May 00 02:21 Lag2 2 0 17 37 +- 392 58 +-1073 0
7836 4 May 00 20:19 Lag2 12 0 35 -33 +- 36 -11 +- 45 4

Station 7837 (Shanghai Observatory) (Position fixed, acc. 50 mm)
7837 2 May 00 12:25 Lag1 3 0 16 99 +- 885 -88 +- 716 6
7837 2 May 00 12:37 Lag2 9 0 8 4 +- 95 3 +- 98 2
7837 2 May 00 16:25 Lag2 14 0 47 -47 +- 49 -1 +- 50 9
7837 3 May 00 11:05 Lag1 6 0 45 -56 +- 503 45 +- 228 8
7837 3 May 00 14:31 Lag2 15 0 22 -22 +- 48 6 +- 26 6
7837 3 May 00 18:45 Lag2 16 0 24 9 +- 44 -24 +- 45 6
7837 4 May 00 12:38 Lag2 18 0 53 -51 +- 41 -2 +- 42 15
7837 4 May 00 16:43 Lag2 14 0 18 0 +- 50 -14 +- 43 5
7837 5 May 00 11:35 Lag1 9 0 59 -45 +- 58 43 +- 74 5
7837 5 May 00 14:41 Lag2 23 0 11 8 +- 37 2 +- 23 5
7837 5 May 00 18:57 Lag2 15 0 15 -12 +- 47 -12 +- 55 7

Station 7838 (Simosato Observatory) (Position fixed, acc. 30 mm)
7838 27 Apr 00 18:05 Lag2 22 0 48 46 +- 28 -2 +- 23 17
7838 28 Apr 00 00:32 Lag1 7 0 59 38 +- 136 12 +- 81 7
7838 28 Apr 00 10:25 Lag1 6 0 44 -35 +- 169 6 +- 117 4
7838 28 Apr 00 11:57 Lag2 15 0 60 20 +- 41 -37 +- 33 5
7838 1 May 00 14:17 Lag2 11 0 24 -37 +- 81 -10 +- 53 6

Station 7839 (Graz) (Position fixed, acc. 10 mm)
7839 27 Apr 00 07:42 Lag2 11 0 30 -54 +- 59 26 +- 46 4
7839 3 May 00 07:45 Lag1 14 0 44 11 +- 27 18 +- 10 3
7839 3 May 00 08:07 Lag2 5 0 7 8 +- 60 2 +- 67 2
7839 3 May 00 11:15 Lag1 17 0 19 6 +- 23 11 +- 14 2
7839 3 May 00 14:41 Lag1 11 0 11 24 +- 64 14 +- 36 1
7839 3 May 00 22:01 Lag2 17 0 29 22 +- 23 8 +- 14 3

Station 7840 (Herstmonceux) (Position fixed, acc. 20 mm)
7840 27 Apr 00 03:11 Lag2 11 0 14 1 +- 48 11 +- 35 2
7840 29 Apr 00 07:45 Lag2 14 0 57 -50 +- 41 -7 +- 34 3
7840 29 Apr 00 09:55 Lag1 17 0 19 19 +- 27 -6 +- 16 4
7840 29 Apr 00 13:21 Lag1 15 0 26 25 +- 27 -6 +- 20 4
7840 29 Apr 00 16:45 Lag1 19 0 36 1 +- 24 -21 +- 14 3
7840 29 Apr 00 20:25 Lag1 7 0 23 -7 +- 43 -20 +- 36 3
7840 29 Apr 00 21:40 Lag2 9 0 16 15 +- 36 -2 +- 36 5
7840 30 Apr 00 01:29 Lag2 15 0 31 1 +- 30 21 +- 20 3
7840 30 Apr 00 15:33 Lag1 14 0 20 12 +- 33 -16 +- 23 2
7840 30 Apr 00 18:57 Lag1 19 0 26 -5 +- 25 -16 +- 16 2
7840 30 Apr 00 23:37 Lag2 11 0 29 -5 +- 33 17 +- 19 4
7840 1 May 00 14:16 Lag1 11 0 25 32 +- 44 -11 +- 33 4
7840 1 May 00 17:31 Lag1 18 0 35 -2 +- 25 -19 +- 13 2
7840 2 May 00 16:09 Lag1 18 0 25 -1 +- 25 -15 +- 15 1
7840 4 May 00 16:59 Lag1 19 0 18 -6 +- 24 -9 +- 14 3
7840 5 May 00 00:24 Lag2 12 0 30 -1 +- 75 18 +- 45 2
7840 5 May 00 12:23 Lag1 4 0 16 -11 +- 83 10 +- 153 1
7840 5 May 00 15:49 Lag1 10 0 23 23 +- 40 0 +- 35 2
7840 5 May 00 22:13 Lag2 8 0 63 -3 +- 38 39 +- 23 4
7840 6 May 00 02:29 Lag2 10 0 77 22 +- 46 49 +- 38 5
7840 6 May 00 11:01 Lag1 5 0 30 -15 +- 51 -29 +- 46 1
7840 6 May 00 14:25 Lag1 11 0 67 67 +- 32 -14 +- 30 4
7840 6 May 00 17:57 Lag1 14 0 4 2 +- 35 0 +- 24 2

Station 7845 (Grasse) (Position fixed, acc. 20 mm)
7845 2 May 00 09:28 Lag1 9 0 56 -58 +- 37 10 +- 39 2
7845 3 May 00 07:49 Lag1 8 0 86 -48 +- 73 22 +- 41 4
7845 3 May 00 08:21 Lag2 11 0 15 -29 +- 61 18 +- 47 2

Station 7849 (Mount Stromlo) (Position fixed, acc. 10 mm)
7849 27 Apr 00 01:27 Lag2 7 0 21 21 +- 259 -19 +- 119 3
7849 27 Apr 00 05:23 Lag2 10 0 40 9 +- 51 32 +- 50 3
7849 27 Apr 00 07:42 Lag1 5 0 19 -15 +- 44 27 +- 113 10
7849 27 Apr 00 09:19 Lag2 16 0 48 10 +- 24 34 +- 17 3
7849 27 Apr 00 11:09 Lag1 15 0 41 -43 +- 25 8 +- 17 6
7849 27 Apr 00 14:41 Lag1 8 0 31 20 +- 48 16 +- 59 3
7849 27 Apr 00 17:44 Lag1 6 0 30 -22 +- 39 9 +- 19 7
7849 27 Apr 00 21:13 Lag1 20 0 12 -10 +- 21 2 +- 12 6
7849 27 Apr 00 23:18 Lag2 3 0 27 30 +- 64 -30 +- 100 5
7849 28 Apr 00 03:07 Lag2 15 0 18 10 +- 26 -11 +- 24 2
7849 28 Apr 00 07:15 Lag2 14 0 33 31 +- 25 -3 +- 13 10
7849 28 Apr 00 10:17 Lag1 3 0 5 -184 +-2126 69 +- 792 0
7849 28 Apr 00 23:49 Lag1 3 0 14 22 +- 281 -13 +- 426 2
7849 29 Apr 00 01:21 Lag2 13 0 9 3 +- 31 -9 +- 28 2
7849 29 Apr 00 05:21 Lag2 6 0 24 15 +- 222 -5 +- 151 4
7849 29 Apr 00 11:57 Lag1 7 0 6 1 +- 39 -2 +- 34 4
7849 29 Apr 00 15:19 Lag1 7 0 17 20 +- 43 -14 +- 45 2
7849 29 Apr 00 22:05 Lag1 11 0 25 -20 +- 28 -9 +- 17 5
7849 29 Apr 00 23:29 Lag2 10 0 41 47 +- 35 -19 +- 39 3
7849 30 Apr 00 03:56 Lag2 4 0 16 43 +- 654 -13 +- 324 4
7849 30 Apr 00 07:30 Lag2 1 0 0 0 +- 0 0 +- 0 0
7849 2 May 00 07:47 Lag2 3 0 26 395 +-1479 171 +- 672 12
7849 5 May 00 06:19 Lag2 6 0 24 -21 +- 42 10 +- 91 2
7849 5 May 00 23:57 Lag2 15 0 16 -1 +- 25 12 +- 21 2
7849 6 May 00 12:59 Lag1 8 0 42 -36 +- 35 -19 +- 43 2

Station 7939 (Matera) (Position fixed, acc. 120 mm)
7939 4 May 00 20:10 Lag2 7 0 119 -97 +- 258 -100 +- 246 104

Station 8834 (Wettzell) (Position fixed, acc. 10 mm)
8834 27 Apr 00 05:37 Lag1 10 0 21 -14 +- 36 25 +- 42 11
8834 27 Apr 00 09:20 Lag1 6 0 60 -55 +- 97 -1 +- 58 18
8834 1 May 00 07:12 Lag1 4 0 38 -23 +- 150 14 +- 141 7
8834 2 May 00 06:15 Lag2 6 0 16 -29 +- 75 31 +- 100 3
8834 2 May 00 09:27 Lag1 8 0 43 -49 +- 44 10 +- 38 9
8834 3 May 00 00:21 Lag2 6 0 17 -70 +- 198 36 +- 125 3
8834 3 May 00 04:29 Lag2 9 0 26 -6 +- 147 -10 +- 80 5
8834 3 May 00 14:47 Lag1 10 0 63 -45 +- 33 16 +- 19 8
8834 3 May 00 22:23 Lag2 13 0 47 -88 +- 78 24 +- 42 4
8834 5 May 00 09:07 Lag1 9 0 51 -59 +- 179 3 +- 71 6
8834 5 May 00 15:41 Lag1 11 0 22 7 +- 29 16 +- 26 8
8834 5 May 00 22:29 Lag2 13 0 41 -58 +- 41 39 +- 27 8
8834 6 May 00 02:41 Lag2 3 0 11 -37 +- 190 52 +- 321 0
8834 6 May 00 07:12 Lag1 6 0 73 173 +- 413 39 +- 163 1
8834 6 May 00 14:33 Lag1 10 0 31 3 +- 90 -17 +- 46 7
8834 6 May 00 17:49 Lag1 17 0 67 -67 +- 24 3 +- 16 12
8834 6 May 00 20:43 Lag2 10 0 50 -90 +- 76 33 +- 52 2
--------------------------------------------------------------------------------

Distribution of daytime, nighttime and twilight passes since Mar 1, 1900

--------------------------------------------------------------------------
Station System Period Number of Passes
LAGEOS-1 LAGEOS-2
Day/Night/Twil. Day/Night/Twil. Total
--------------------------------------------------------------------------
1864 MD2LAS 000304 - 000430 0/ 8/ 0 0/ 24/ 0 32
1868 KOMLAS 000320 - 000330 0/ 2/ 0 0/ 2/ 0 4
1884 RIGLAS 000302 - 000505 0/ 10/ 0 0/ 21/ 0 31
7080 MLRS25 000301 - 000508 23/ 22/ 5 18/ 27/ 2 97
7090 ML0514 000301 - 000508 16/ 88/ 6 43/ 58/ 4 215
7105 ML0725 000301 - 000508 36/ 33/ 5 24/ 41/ 4 143
7110 ML0414 000302 - 000508 28/ 35/ 3 22/ 56/ 6 150
7124 ML0819 000403 - 000428 0/ 10/ 0 0/ 15/ 0 25
7237 CHALAS 000311 - 000507 0/ 16/ 0 0/ 36/ 0 52
7249 BEJLAS 000306 - 000506 0/ 18/ 0 0/ 29/ 0 47
7328 KOGLAS 000301 - 000412 17/ 14/ 2 10/ 1/ 0 44
7335 KASLAS 000301 - 000508 41/ 0/ 1 20/ 0/ 0 62
7337 MIULAS 000301 - 000508 27/ 3/ 3 18/ 0/ 0 51
7339 TATLAS 000301 - 000508 51/ 7/ 4 25/ 1/ 0 88
7403 TLRS3 000405 - 000503 2/ 2/ 0 0/ 4/ 0 8
7806 METLAS 000312 - 000506 0/ 10/ 0 0/ 6/ 0 16
7810 ZIMLAT 000305 - 000505 1/ 7/ 0 0/ 6/ 1 15
7811 POLLAS 000310 - 000505 0/ 7/ 0 0/ 16/ 0 23
7820 YSLR01 000303 - 000427 0/ 21/ 0 0/ 30/ 0 51
7824 SPNLAS 000301 - 000504 0/ 32/ 3 0/ 13/ 1 49
7831 HELLAS 000327 - 000328 0/ 1/ 0 0/ 1/ 0 2
7835 GRASSE 000302 - 000503 7/ 22/ 1 10/ 17/ 0 57
7836 GFZLAS 000302 - 000504 1/ 10/ 3 2/ 19/ 1 36
7837 CHILAS 000316 - 000507 0/ 13/ 2 0/ 17/ 1 33
7838 SHOLAS 000307 - 000501 11/ 22/ 3 3/ 18/ 0 57
7839 AUSLAS 000302 - 000503 23/ 20/ 3 16/ 18/ 1 81
7840 RGOLAS 000301 - 000507 63/ 26/ 6 23/ 27/ 1 146
7845 GRASLL 000302 - 000503 21/ 6/ 1 17/ 3/ 0 48
7849 MSLO01 000301 - 000506 26/ 64/ 4 52/ 41/ 10 197
7939 SAO102 000301 - 000504 0/ 2/ 0 0/ 4/ 0 6
8834 WLRS01 000301 - 000507 49/ 15/ 3 18/ 29/ 3 117
--------------------------------------------------------------------------


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)
--------------------------------------------------------------
429.0 88.0 +/- 0.1 339.1 +/- 0.1 -31746.99 +/- 0.01
502.0 90.6 +/- 0.1 338.1 +/- 0.1 -31750.89 +/- 0.01
505.0 89.7 +/- 0.1 336.3 +/- 0.1 -31755.37 +/- 0.01
--------------------------------------------------------------

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 5 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.
Users of this report are invited to give suggestions for further improvements.


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

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