RIGA00LVA Site Information Form (site log)
     International GNSS Service
     See Instructions at:
       https://files.igs.org/pub/station/general/sitelog_instr.txt


0.   Form

     Prepared by (full name)  : luai@lu.lv
     Date Prepared            : 2024-04-09
     Report Type              : UPDATE
     If Update:
      Previous Site Log       : riga00lva_20230725.log
      Modified/Added Sections : 3.25, 3.26


1.   Site Identification of the GNSS Monument

     Site Name                : RIGA permanent GPS
     Four Character ID        : RIGA
     Monument Inscription     : 10371
     IERS DOMES Number        : 12302M002
     CDP Number               : (A4)
     Monument Description     : (PILLAR/BRASS PLATE/STEEL MAST/etc)
       Height of the Monument : 5.34 m
       Monument Foundation    : 5 m diameter concrete cylinder.
       Foundation Depth       : 12 m
     Marker Description       : standard geodetic mark
     Date Installed           : 1995-12-05T04:00Z
     Geologic Characteristic  : (BEDROCK/CLAY/CONGLOMERATE/GRAVEL/SAND/etc)
       Bedrock Type           : METAMORPHIC
       Bedrock Condition      : JOINTED
       Fracture Spacing       : 1-10 cm
       Fault zones nearby     : No
         Distance/activity    : No
     Additional Information   : Concrete pillar with forced centering
                              : and levelling brass plate.
                              : The height of the monument is above
                              : local ground plane.
                              : Dolomite with a quaternary covering of
                              : alluvium and beach deposits.


2.   Site Location Information

     City or Town             : Riga
     State or Province        : Vidzeme
     Country                  : Latvia
     Tectonic Plate           : EURASIAN
     Approximate Position (ITRF)
       X coordinate (m)       : 3183899.344
       Y coordinate (m)       : 1421478.378
       Z coordinate (m)       : 5322810.736
       Latitude (N is +)      : +565655.03
       Longitude (E is +)     : +0240331.58
       Elevation (m,ellips.)  : 34.7
     Additional Information   : ITRF-2000 at epoch 1997.0


3.   GNSS Receiver Information

3.1  Receiver Type            : ASHTECH Z-XII3
     Satellite System         : GPS
     Serial Number            : UNKNOWN
     Firmware Version         : UNKNOWN
     Elevation Cutoff Setting : 5 deg
     Date Installed           : 1995-12-05T04:00Z
     Date Removed             : 1996-03-28T23:59Z
     Temperature Stabiliz.    : 18.0 +/- 4.0
     Additional Information   : from FGI Finnland

3.2  Receiver Type            : ROGUE SNR-8000
     Satellite System         : GPS
     Serial Number            : 223
     Firmware Version         : 2.8
     Elevation Cutoff Setting : 5 deg
     Date Installed           : 1996-03-29T00:00Z
     Date Removed             : 1999-09-02T13:10Z
     Temperature Stabiliz.    : 18.0 +/- 4.0
     Additional Information   : from OSO Sweden.

3.3  Receiver Type            : ROGUE SNR-8000
     Satellite System         : GPS
     Serial Number            : 223
     Firmware Version         : 2.8.0.7
     Elevation Cutoff Setting : 5 deg
     Date Installed           : 1999-09-02T13:45Z
     Date Removed             : 2005-01-13T00:30Z
     Temperature Stabiliz.    : 18.0 +/- 4.0
     Additional Information   : from OSO Sweden.

3.4  Receiver Type            : AOA BENCHMARK ACT
     Satellite System         : GPS
     Serial Number            : 2050
     Firmware Version         : 3.3.32.5
     Elevation Cutoff Setting : 4 deg
     Date Installed           : 2005-01-13T10:08Z
     Date Removed             : 2006-06-17T00:00Z
     Temperature Stabiliz.    : 18.0 +/- 4.0
     Additional Information   : LUAI property.

3.5  Receiver Type            : ROGUE SNR-8000
     Satellite System         : GPS
     Serial Number            : 223
     Firmware Version         : 2.8.0.7
     Elevation Cutoff Setting : 5 deg
     Date Installed           : 2006-06-18T00:00Z
     Date Removed             : 2007-01-08T13:00Z
     Temperature Stabiliz.    : 18.0 +/- 4.0
     Additional Information   : from OSO Sweden.

3.6  Receiver Type            : AOA BENCHMARK ACT
     Satellite System         : GPS
     Serial Number            : 2050
     Firmware Version         : 3.3.32.5
     Elevation Cutoff Setting : 4 deg
     Date Installed           : 2007-01-08T13:00Z
     Date Removed             : 2007-05-24T10:00Z
     Temperature Stabiliz.    : 18.0 +/- 4.0
     Additional Information   : LUAI property

3.7  Receiver Type            : ROGUE SNR-8000
     Satellite System         : GPS
     Serial Number            : 223
     Firmware Version         : 2.8.0.7
     Elevation Cutoff Setting : 5 deg
     Date Installed           : 2007-05-29T11:00Z
     Date Removed             : 2007-09-10T08:30Z
     Temperature Stabiliz.    : 18.0 +/- 4.0
     Additional Information   : from OSO Sweden.

3.8  Receiver Type            : AOA BENCHMARK ACT
     Satellite System         : GPS
     Serial Number            : 2050
     Firmware Version         : 3.3.32.5
     Elevation Cutoff Setting : 4 deg
     Date Installed           : 2007-09-10T09:00Z
     Date Removed             : 2007-12-06T12:00Z
     Temperature Stabiliz.    : 18.0 +/- 4.0
     Additional Information   : LUAI property

3.9  Receiver Type            : LEICA GRX1200PRO
     Satellite System         : GPS
     Serial Number            : 453321
     Firmware Version         : 5.60/2.125
     Elevation Cutoff Setting : 4 deg
     Date Installed           : 2007-12-16T12:00Z
     Date Removed             : 2012-12-12T15:20Z
     Temperature Stabiliz.    : 18.0 +/- 4.0
     Additional Information   : none

3.10 Receiver Type            : LEICA GRX1200PRO
     Satellite System         : GPS
     Serial Number            : 453321
     Firmware Version         : 5.60/2.127
     Elevation Cutoff Setting : 4 deg
     Date Installed           : 2012-12-12T15:20Z
     Date Removed             : 2013-12-11T09:00Z
     Temperature Stabiliz.    : 18.0 +/- 4.0
     Additional Information   : (multiple lines)

3.11 Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO+GAL+SBAS
     Serial Number            : 1830430
     Firmware Version         : 3.03/6.214
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2013-12-11T13:00Z
     Date Removed             : 2014-08-14T00:00Z
     Temperature Stabiliz.    : 18.0 +/- 4.0
     Additional Information   : LUAI property.

3.12 Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO+GAL+SBAS
     Serial Number            : 1830430
     Firmware Version         : 3.10.1633/6.403
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2014-08-14T00:00Z
     Date Removed             : 2015-05-11T10:00Z
     Temperature Stabiliz.    : 18.0 +/- 4.0
     Additional Information   : LUAI property.

3.13 Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO+GAL+SBAS
     Serial Number            : 1830430
     Firmware Version         : 3.11.1639/6.403
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2015-05-11T10:00Z
     Date Removed             : 2015-10-29T17:10Z
     Temperature Stabiliz.    : 18.0 +/- 4.0
     Additional Information   : (multiple lines)

3.14 Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO
     Serial Number            : 1830430
     Firmware Version         : 3.21.1806/6.403
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2015-10-29T17:10Z
     Date Removed             : 2016-01-14T12:20Z
     Temperature Stabiliz.    : 20.0 +/- 4.0
     Additional Information   : Temporary removed GAL+SBAS from tracked
                              : satellite systems to match currently submitted
                              : data

3.15 Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO
     Serial Number            : 1830430
     Firmware Version         : 3.22.1818/6.521
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2016-01-14T12:20Z
     Date Removed             : 2016-06-08T09:15Z
     Temperature Stabiliz.    : 20.0 +/- 4.0
     Additional Information   : (multiple lines)

3.16 Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO+GAL+SBAS
     Serial Number            : 1830430
     Firmware Version         : 4.00/6.522
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2016-06-08T09:15Z
     Date Removed             : 2016-12-20T11:20Z
     Temperature Stabiliz.    : 21.0 +/- 4.0
     Additional Information   : (multiple lines)

3.17 Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO+GAL+BDS+SBAS
     Serial Number            : 1830430
     Firmware Version         : 4.02/6.522
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2016-12-20T11:20Z
     Date Removed             : 2017-02-22T13:10Z
     Temperature Stabiliz.    : 21.0 +/- 4.0
     Additional Information   : (multiple lines)

3.18 Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO+GAL+BDS+SBAS
     Serial Number            : 1830430
     Firmware Version         : 4.11/6.523
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2017-02-22T13:10Z
     Date Removed             : 2018-03-28T06:00Z
     Temperature Stabiliz.    : 21.0 +/- 4.0
     Additional Information   : (multiple lines)

3.19 Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO+GAL+BDS+SBAS
     Serial Number            : 1830430
     Firmware Version         : 4.20/6.524
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2018-03-28T06:00Z
     Date Removed             : 2019-04-06T08:00Z
     Temperature Stabiliz.    : 21.0 +/- 4.0
     Additional Information   : (multiple lines)

3.20 Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO+GAL+BDS+SBAS
     Serial Number            : 1830430
     Firmware Version         : 4.30/6.525
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2019-04-06T08:59Z
     Date Removed             : 2019-10-14T12:11Z
     Temperature Stabiliz.    : 21.0 +/- 4.0
     Additional Information   : (multiple lines)

3.21 Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO+GAL+BDS+SBAS
     Serial Number            : 1830430
     Firmware Version         : 4.30/6.713
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2019-10-14T12:11Z
     Date Removed             : 2021-06-08T12:40Z
     Temperature Stabiliz.    : 23.0 +/- 1.0
     Additional Information   : (multiple lines)

3.22 Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO+GAL+BDS+SBAS
     Serial Number            : 1830430
     Firmware Version         : 4.50/6.525
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2021-06-08T12:50Z
     Date Removed             : 2022-07-06T13:50Z
     Temperature Stabiliz.    : 23.0 +/- 1.0
     Additional Information   : (multiple lines)

3.23 Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO+GAL+BDS+SBAS
     Serial Number            : 1830430
     Firmware Version         : 4.52/6.525
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2022-07-06T13:50Z
     Date Removed             : 2022-11-01T14:30Z
     Temperature Stabiliz.    : 23.0 +/- 1.0
     Additional Information   : (multiple lines)

3.24 Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO+GAL+BDS+SBAS
     Serial Number            : 1830430
     Firmware Version         : 4.60/6.525
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2022-11-01T14:30Z
     Date Removed             : 2023-07-25T14:45Z
     Temperature Stabiliz.    : 23.0 +/- 1.0
     Additional Information   : (multiple lines)

3.25 Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO+GAL+BDS+SBAS
     Serial Number            : 1830430
     Firmware Version         : 4.70/6.525
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2023-07-25T14:45Z
     Date Removed             : 2024-04-04T10:00Z
     Temperature Stabiliz.    : 23.0 +/- 1.0
     Additional Information   : (multiple lines)

3.26 Receiver Type            : LEICA GR25
     Satellite System         : GPS+GLO+GAL+BDS+SBAS
     Serial Number            : 1830430
     Firmware Version         : 4.80.109
     Elevation Cutoff Setting : 0 deg
     Date Installed           : 2024-04-04T10:00Z
     Date Removed             : CCYY-MM-DDThh:mmZ
     Temperature Stabiliz.    : 23.0 +/- 1.0
     Additional Information   : (multiple lines)

3.x  Receiver Type            : (A20, from rcvr_ant.tab; see instructions)
     Satellite System         : (GPS+GLO+GAL+BDS+QZSS+IRNSS+SBAS)
     Serial Number            : (A20, but note the first A5 is used in SINEX)
     Firmware Version         : (A11)
     Elevation Cutoff Setting : (deg)
     Date Installed           : (CCYY-MM-DDThh:mmZ)
     Date Removed             : (CCYY-MM-DDThh:mmZ)
     Temperature Stabiliz.    : (none or tolerance in degrees C)
     Additional Information   : (multiple lines)


4.   GNSS Antenna Information

4.1  Antenna Type             : AOAD/M_T        NONE
     Serial Number            : 519
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  :   0.0850
     Marker->ARP North Ecc(m) :   0.0000
     Marker->ARP East Ecc(m)  :   0.0000
     Alignment from True N    : 0 deg
     Antenna Radome Type      : NONE
     Radome Serial Number     : NONE
     Antenna Cable Type       : AWM RG214/U STYLE 1354 E96824-I
     Antenna Cable Length     : 60 m
     Date Installed           : 1995-12-05T04:00Z
     Date Removed             : 1996-03-28T23:59Z
     Additional Information   : from FGI Finnland

4.2  Antenna Type             : ASH700936D_M    NONE
     Serial Number            : 11471
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  :   0.0850
     Marker->ARP North Ecc(m) :   0.0000
     Marker->ARP East Ecc(m)  :   0.0000
     Alignment from True N    : 0 deg
     Antenna Radome Type      : NONE
     Radome Serial Number     : NONE
     Antenna Cable Type       : AWM RG214/U STYLE 1354 E96824-I
     Antenna Cable Length     : 60 m
     Date Installed           : 1996-03-29T00:00Z
     Date Removed             : 2005-01-13T00:30Z
     Additional Information   : from OSO Sweden

4.3  Antenna Type             : AOAD/M_T        NONE
     Serial Number            : 532
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  :   0.0850
     Marker->ARP North Ecc(m) :   0.0000
     Marker->ARP East Ecc(m)  :   0.0000
     Alignment from True N    : 0 deg
     Antenna Radome Type      : NONE
     Radome Serial Number     : NONE
     Antenna Cable Type       : AWM RG214/U STYLE 1354 E96824-I
     Antenna Cable Length     : 60 m
     Date Installed           : 2005-01-13T10:08Z
     Date Removed             : 2006-05-20T06:00Z
     Additional Information   : Internally Damaged

4.4  Antenna Type             : ASH700936D_M    NONE
     Serial Number            : 11471
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  :   0.0850
     Marker->ARP North Ecc(m) :   0.0000
     Marker->ARP East Ecc(m)  :   0.0000
     Alignment from True N    : 0 deg
     Antenna Radome Type      : NONE
     Radome Serial Number     : NONE
     Antenna Cable Type       : AWM RG214/U STYLE 1354 E96824-I
     Antenna Cable Length     : 60 m
     Date Installed           : 2006-05-22T00:00Z
     Date Removed             : 2007-12-06T12:00Z
     Additional Information   : The same as in point 4.2

4.5  Antenna Type             : LEIAT504        LEIS
     Serial Number            : 102588
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  :   0.0850
     Marker->ARP North Ecc(m) :   0.0000
     Marker->ARP East Ecc(m)  :   0.0000
     Alignment from True N    : 0 deg
     Antenna Radome Type      : LEIS
     Radome Serial Number     : NONE
     Antenna Cable Type       : AWM RG214/U STYLE 1354 E96824-I
     Antenna Cable Length     : 60 m
     Date Installed           : 2007-12-16T12:00Z
     Date Removed             : 2013-12-11T09:00Z
     Additional Information   : NONE

4.6  Antenna Type             : LEIAR25.R4      LEIT
     Serial Number            : 726676
     Antenna Reference Point  : BPA
     Marker->ARP Up Ecc. (m)  :   0.0850
     Marker->ARP North Ecc(m) :   0.0000
     Marker->ARP East Ecc(m)  :   0.0000
     Alignment from True N    : 0 deg
     Antenna Radome Type      : LEIT
     Radome Serial Number     : 
     Antenna Cable Type       : Huber+Suhner
     Antenna Cable Length     : 50 m
     Date Installed           : 2013-12-11T15:00Z
     Date Removed             : CCYY-MM-DDThh:mmZ
     Additional Information   : (multiple lines)

4.x  Antenna Type             : (A20, from rcvr_ant.tab; see instructions)
     Serial Number            : (A*, but note the first A5 is used in SINEX)
     Antenna Reference Point  : (BPA/BCR/XXX from "antenna.gra"; see instr.)
     Marker->ARP Up Ecc. (m)  : (F8.4)
     Marker->ARP North Ecc(m) : (F8.4)
     Marker->ARP East Ecc(m)  : (F8.4)
     Alignment from True N    : (deg; + is clockwise/east)
     Antenna Radome Type      : (A4 from rcvr_ant.tab; see instructions)
     Radome Serial Number     : 
     Antenna Cable Type       : (vendor & type number)
     Antenna Cable Length     : (m)
     Date Installed           : (CCYY-MM-DDThh:mmZ)
     Date Removed             : (CCYY-MM-DDThh:mmZ)
     Additional Information   : (multiple lines)


5.   Surveyed Local Ties

5.1  Tied Marker Name         : S1884  Laser telescope LS-105
     Tied Marker Usage        : SLR
     Tied Marker CDP Number   : 1884
     Tied Marker DOMES Number : 12302S002
     Differential Components from GNSS Marker to the tied monument (ITRS)
       dx (m)                 : -3.401 m
       dy (m)                 : 18.661 m
       dz (m)                 : -6.963 m
     Accuracy (mm)            : 2 mm
     Survey method            : GPS CAMPAIGN
     Date Measured            : 1995-06-10T12:00Z
     Additional Information   : from local GPS session.

5.2  Tied Marker Name         : M1884  Moblas platform
     Tied Marker Usage        : SLR
     Tied Marker CDP Number   : 7560
     Tied Marker DOMES Number : 12302M001
     Differential Components from GNSS Marker to the tied monument (ITRS)
       dx (m)                 : 14.834 m
       dy (m)                 : -4.832 m
       dz (m)                 : -13.919 m
     Accuracy (mm)            : 2 mm
     Survey method            : GPS CAMPAIGN
     Date Measured            : 1995-06-10T12:00Z
     Additional Information   : local GPS session

5.3  Tied Marker Name         : S1884 LASER TELESCOPE LS-105
     Tied Marker Usage        : SLR
     Tied Marker CDP Number   : 1884
     Tied Marker DOMES Number : 12302S002
     Differential Components from GNSS Marker to the tied monument (ITRS)
       dx (m)                 : -3.405 m
       dy (m)                 : 18.661 m
       dz (m)                 : -6.963 m
     Accuracy (mm)            : 2 mm
     Survey method            : WITH TACHEOMETRE SET-4220
     Date Measured            : 2004-12-20T10:00Z
     Additional Information   : local survey

5.4  Tied Marker Name         : M1884 MOBLAS PLATFORM
     Tied Marker Usage        : SLR
     Tied Marker CDP Number   : 7560
     Tied Marker DOMES Number : 12302M001
     Differential Components from GNSS Marker to the tied monument (ITRS)
       dx (m)                 : 14.821 m
       dy (m)                 : -4.837 m
       dz (m)                 : -13.908 m
     Accuracy (mm)            : 2 mm
     Survey method            : WITH TACHEOMETRE SET-4220
     Date Measured            : 2004-12-20T10:00Z
     Additional Information   : local survey

5.x  Tied Marker Name         : 
     Tied Marker Usage        : (SLR/VLBI/LOCAL CONTROL/FOOTPRINT/etc)
     Tied Marker CDP Number   : (A4)
     Tied Marker DOMES Number : (A9)
     Differential Components from GNSS Marker to the tied monument (ITRS)
       dx (m)                 : (m)
       dy (m)                 : (m)
       dz (m)                 : (m)
     Accuracy (mm)            : (mm)
     Survey method            : (GPS CAMPAIGN/TRILATERATION/TRIANGULATION/etc)
     Date Measured            : (CCYY-MM-DDThh:mmZ)
     Additional Information   : (multiple lines)


6.   Frequency Standard

6.1  Standard Type            : INTERNAL
       Input Frequency        : (if external)
       Effective Dates        : 1995-12-05/2005-01-13
       Notes                  : (multiple lines)

6.2  Standard Type            : INTERNAL
       Input Frequency        : (if external)
       Effective Dates        : 2005-01-13/CCYY-MM-DD
       Notes                  : (multiple lines)

6.x  Standard Type            : (INTERNAL or EXTERNAL H-MASER/CESIUM/etc)
       Input Frequency        : (if external)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Notes                  : (multiple lines)


7.   Collocation Information

7.1  Instrumentation Type     : ABSOLUTE GRAVIMETER JILAG-5
       Status                 : MOBILE
       Effective Dates        : 1995-10-25/1995-10-29
       Notes                  : Finnish Geodetic Institute.

7.2  Instrumentation Type     : SLR
       Status                 : PERMANENT
       Effective Dates        : 1995-12-05/CCYY-MM-DD
       Notes                  : EUROLAS Consortium.

7.3  Instrumentation Type     : ABSOLUTE GRAVIMETER FG5/101
       Status                 : MOBILE
       Effective Dates        : 1996-05-07/1996-05-11
       Notes                  : IFAG Germany

7.4  Instrumentation Type     : ABSOLUTE GRAVIMETER FG5/107
       Status                 : MOBILE
       Effective Dates        : 1996-08-01/1996-08-12
       Notes                  : DMA USA

7.x  Instrumentation Type     : (GPS/GLONASS/DORIS/PRARE/SLR/VLBI/TIME/etc)
       Status                 : (PERMANENT/MOBILE)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Notes                  : (multiple lines)


8.   Meteorological Instrumentation

8.1.1  Humidity Sensor Model  : Hair Hygrometer
       Manufacturer           : USSR
       Serial Number          : M34-3359
       Data Sampling Interval :  3600 sec
       Accuracy (% rel h)     : 10 % rel h
       Aspiration             : fan
       Height Diff to Ant     : 3.5 m
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : 1995-12-05/2007-03-30
       Notes                  : No meteo files given.
                              : Not in use for GPS.
                              : Not calibrated.

8.1.2  Humidity Sensor Model  : WXT510
       Manufacturer           : VAISALA
       Serial Number          : C1150003
       Data Sampling Interval :   600 sec
       Accuracy (% rel h)     : 3 % rel h
       Aspiration             : NATURAL
       Height Diff to Ant     : -2 m
       Calibration date       : 2007-03-16
       Effective Dates        : 2007-03-30/CCYY-MM-DD
       Notes                  : Calibrated at Factory.
                              : 3% accur. between 0 and 90% RH
                              : 5% accur. between 90 and 100% RH

8.1.x  Humidity Sensor Model  : 
       Manufacturer           : 
       Serial Number          : 
       Data Sampling Interval : (sec)
       Accuracy (% rel h)     : (% rel h)
       Aspiration             : (UNASPIRATED/NATURAL/FAN/etc)
       Height Diff to Ant     : (m)
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Notes                  : (multiple lines)

8.2.1  Pressure Sensor Model  : Precisions Barometer
       Manufacturer           : Paulin Stockholm
       Serial Number          : VBM2-1443
       Data Sampling Interval : 3600 sec
       Accuracy               : 0.2 hPa
       Height Diff to Ant     : 3.5 m
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : 1995-12-05/2007-03-30
       Notes                  : No meteo files given.
                              : Not in use for GPS.
                              : Not calibrated.

8.2.2  Pressure Sensor Model  : WXT510
       Manufacturer           : VAISALA
       Serial Number          : C1150003
       Data Sampling Interval : 600 sec
       Accuracy               : 0.5 hPa
       Height Diff to Ant     : -2 m
       Calibration date       : 2007-03-16
       Effective Dates        : 2007-03-30/CCYY-MM-DD
       Notes                  : Calibrated at Factory.

8.2.x  Pressure Sensor Model  : 
       Manufacturer           : 
       Serial Number          : 
       Data Sampling Interval : (sec)
       Accuracy               : (hPa)
       Height Diff to Ant     : (m)
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Notes                  : (multiple lines)

8.3.1  Temp. Sensor Model     : Mercury Thermometer
       Manufacturer           : USSR
       Serial Number          : TMZ-4970
       Data Sampling Interval : 3600 sec
       Accuracy               : 0.1 deg C
       Aspiration             : UNASPIRATED
       Height Diff to Ant     : 3.5 m
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : 1995-12-05/2007-03-30
       Notes                  : No meteo files given.
                              : Not in use for GPS.
                              : Not calibrated after factory, hence calibration
                              : date is unknown

8.3.2  Temp. Sensor Model     : WXT510
       Manufacturer           : VAISALA
       Serial Number          : C1150003
       Data Sampling Interval : 600 sec
       Accuracy               : 0.3 deg C
       Aspiration             : NATURAL
       Height Diff to Ant     : -2 m
       Calibration date       : 2007-03-16
       Effective Dates        : 2007-03-30/CCYY-MM-DD
       Notes                  : Calibrated at Factory

8.3.x  Temp. Sensor Model     : 
       Manufacturer           : 
       Serial Number          : 
       Data Sampling Interval : (sec)
       Accuracy               : (deg C)
       Aspiration             : (UNASPIRATED/NATURAL/FAN/etc)
       Height Diff to Ant     : (m)
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Notes                  : (multiple lines)

8.4.x  Water Vapor Radiometer : 
       Manufacturer           : 
       Serial Number          : 
       Distance to Antenna    : (m)
       Height Diff to Ant     : (m)
       Calibration date       : (CCYY-MM-DD)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Notes                  : (multiple lines)

8.5.x  Other Instrumentation  : (multiple lines)


9.   Local Ongoing Conditions Possibly Affecting Computed Position

9.1.x  Radio Interferences    : (TV/CELL PHONE ANTENNA/RADAR/etc)
       Observed Degradations  : (SN RATIO/DATA GAPS/etc)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Additional Information : (multiple lines)

9.2.1  Multipath Sources      : Transit instrument metal roof
       Effective Dates        : 1995-12-05/2013-12-10
       Additional Information : (multiple lines)

9.2.x  Multipath Sources      : (METAL ROOF/DOME/VLBI ANTENNA/etc)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Additional Information : (multiple lines)

9.3.1  Signal Obstructions    : TREES and BUILDINGS
       Effective Dates        : 1995-12-05/CCYY-MM-DD
       Additional Information : (multiple lines)

9.3.x  Signal Obstructions    : (TREES/BUILDINGS/etc)
       Effective Dates        : (CCYY-MM-DD/CCYY-MM-DD)
       Additional Information : (multiple lines)


10.  Local Episodic Effects Possibly Affecting Data Quality

10.x  Date                    : (CCYY-MM-DD/CCYY-MM-DD)
      Event                   : (TREE CLEARING/CONSTRUCTION/etc)


11.  On-Site, Point of Contact Agency Information

     Agency                   : Institute of Astronomy University of Latvia
     Preferred Abbreviation   : LUAI
     Mailing Address          : Boulevard Rainis 19
                              : LV 1586 Riga
                              : Latvia
     Primary Contact
       Contact Name           : Institute of Astronomy University of Latvia
       Telephone (primary)    : 
       Telephone (secondary)  : 
       Fax                    : 
       E-mail                 : luai@lu.lv
     Secondary Contact
       Contact Name           : 
       Telephone (primary)    : 
       Telephone (secondary)  : 
       Fax                    : 
       E-mail                 : 
     Additional Information   : (multiple lines)




12.  Responsible Agency (if different from 11.)

     Agency                   : (multiple lines)
     Preferred Abbreviation   : (A10)
     Mailing Address          : (multiple lines)
     Primary Contact
       Contact Name           : 
       Telephone (primary)    : 
       Telephone (secondary)  : 
       Fax                    : 
       E-mail                 : 
     Secondary Contact
       Contact Name           : 
       Telephone (primary)    : 
       Telephone (secondary)  : 
       Fax                    : 
       E-mail                 : 
     Additional Information   : (multiple lines)


13.  More Information

     Primary Data Center      : BKG
     Secondary Data Center    : 
     URL for More Information : 
     Hardcopy on File
       Site Map               : Y
       Site Diagram           : Y
       Horizon Mask           : Y
       Monument Description   : Y
       Site Pictures          : Y
     Additional Information   : (multiple lines)
     Antenna Graphics with Dimensions

AOAD/M_T   ASH700936D_M

                          -----
  L2 Phase center     /     +     \         <--------------------+
  L1 Phase center    |      +      |        <---------------+    |
   +--------------------------------------------------+     |    |
   |                                          TCR     |     |    |
   |                                                  |     |    |
   |                                                  |     |    |
   |                                                  |     |    |
 +-+--------------------------------------------------+-+   |    |
 +-------------------+-------------+--------------------+   |    |
                     |             |          BCR           |    |
                     |             |                        |  0.213m
         BPA   =>    +=============+   <---+                |    |
                     |     FC      |       |             0.195m  |
                     |   Mount     |     0.085 m            |    |
                     |             |       |                |    |
 Monum.ref.point =>  |     +-+     |   <---+----------------+----+
          +----------+=====| |=====+----------+
          |                                   |
          |                                   |
          |         Concrete  pillar          |
          |                                   |



    ROGUE   AOAD/M_T    MODEL 7490582-2
                       ____________
                      /      + L2  \                      +
    _________________|_______ ______|___________________ 0.1214
    |         |              + L1                      |  +
    |       0.1016                                     | 0.0952
    ==========|=========================================  |
              |___   |______________| __ _________________|
                     |    BPA       | |
                     |              | 0.0850
                 ____|_______x______|_|___
                 |         MARK          |
                 |                       |

Antenna/choke ring assembly phase center offsets
L1 offset  X=0.40 cm, Y=0.20cm, Z=-0.64cm
L2 offset  X=0.36cm,  Y=0.12cm, Z=1.98cm

Horizon mask (degr.)

Azimuth         Open from     Closed by
000 - 063            10         trees
063 - 086            15         trees
086 - 175            10         trees
175 - 252            15         houses
252 - 258            10         houses