MERI Site Information Form International GPS Service See Instructions at: https://files.igs.org/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : JOSE GUILLERMO GASCA MONCAYO Date Prepared : 2021-05-13 Report Type : UPDATE If Update: Previous Site Log : meri_20160518.log,meri_20170913.log Modified/Added Sections : 3.7,3.8,4.11,4.12,log file format update 1. Site Identification of the GNSS Monument Site Name : Merida Four Character ID : MERI Monument Inscription : INEGI-MERI-27-10-92 IERS DOMES Number : 40520M001 CDP Number : (A4) Monument Description : PILLAR Height of the Monument : (m) Monument Foundation : CONCRETE BLOCK, ROOF Foundation Depth : (m) Marker Description : (CHISELLED CROSS/DIVOT/BRASS NAIL/etc) Date Installed : 1993-02-19T00:00Z Geologic Characteristic : (BEDROCK/CLAY/CONGLOMERATE/GRAVEL/SAND/etc) Bedrock Type : (IGNEOUS/METAMORPHIC/SEDIMENTARY) Bedrock Condition : (FRESH/JOINTED/WEATHERED) Fracture Spacing : (1-10 cm/10-50 cm/50-200 cm/over 200 cm) Fault zones nearby : (YES/NO/Name of the zone) Distance/activity : (multiple lines) Additional Information : (multiple lines) 2. Site Location Information City or Town : Merida State or Province : Yucatan Country : Mexico Tectonic Plate : North America Approximate Position (ITRF) X coordinate (m) : 39480.830 Y coordinate (m) : -5957733.150 Z coordinate (m) : 2269335.147 Latitude (N is +) : +205848.16 Longitude (E is +) : -0893713.14 Elevation (m,ellips.) : 7.908 Additional Information : (multiple lines) 3. GNSS Receiver Information 3.1 Receiver Type : ASHTECH P-XII3 Satellite System : GPS Serial Number : 700363B2151 Firmware Version : 7C-P6 Elevation Cutoff Setting : (deg) Date Installed : 1993-02-19 Date Removed : 1995-10-15 Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : Original receiver was removed due problems 3.2 Receiver Type : ASHTECH P-XII3 Satellite System : GPS Serial Number : 700363A02972 Firmware Version : 7C-P6 Elevation Cutoff Setting : (deg) Date Installed : 1995-10-15 Date Removed : 1999-08-21 Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : Replaced to prevent GPS week rollover problem 3.3 Receiver Type : ASHTECH Z-XII3 Satellite System : GPS Serial Number : 70057B03254 Firmware Version : 1L00-1D04 Elevation Cutoff Setting : (deg) Date Installed : 1999-08-21 Date Removed : 2003-01-17 Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : Replaced due upgrade receiver 3.4 Receiver Type : TRIMBLE 5700 Satellite System : GPS Serial Number : 02202900859 Firmware Version : 1.24 Elevation Cutoff Setting : (deg) Date Installed : 2003-01-17 Date Removed : 2014-10-14T10:33Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : (multiple lines) 3.5 Receiver Type : TRIMBLE 4700 Satellite System : GPS Serial Number : 20214617 Firmware Version : 1.30 Elevation Cutoff Setting : (deg) Date Installed : 2014-10-15T15:00Z Date Removed : 2016-05-16T14:00Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : (multiple lines) 3.6 Receiver Type : LEICA GR10 Satellite System : GPS+GLO+GAL Serial Number : 1704015 Firmware Version : 3.22/6.521 Elevation Cutoff Setting : 10 Date Installed : 2016-05-16T16:00Z Date Removed : 2017-08-24T16:00Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : firmware update 3.7 Receiver Type : LEICA GR10 Satellite System : GPS+GLO+GAL Serial Number : 1704015 Firmware Version : 4.11/6.523 Elevation Cutoff Setting : 10 Date Installed : 2017-08-24T16:15Z Date Removed : 2021-05-12T15:00Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : (multiple lines) 3.8 Receiver Type : TRIMBLE ALLOY Satellite System : GPS+GLO+GAL+BDS Serial Number : 6036R40014 Firmware Version : 5.44 Elevation Cutoff Setting : 10 Date Installed : 2021-05-12T15:26Z Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : (multiple lines) 3.x Receiver Type : (A20, from rcvr_ant.tab; see instructions) Satellite System : (GPS+GLO+GAL+CMP+QZSS+SBAS) Serial Number : (A5) 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 : ASH700228D NONE Serial Number : 700228D2880 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0817 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : (m) Date Installed : 1993-02-19 Date Removed : 1995-10-15 Additional Information : According to NGS 63.6 mm from antenna base to : reference plane offset height was measured 4.2 Antenna Type : ASH700228D NONE Serial Number : 700228D2972 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0810 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : 20 m Date Installed : 1995-10-15 Date Removed : 1999-08-21 Additional Information : According to NGS 63.6 mm from antenna base to : reference plane offset height was measured 4.3 Antenna Type : ASH700228D NONE Serial Number : 700228D2052 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0810 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : 20 m Date Installed : 1999-08-21 Date Removed : 2000-08-15 Additional Information : According to NGS 63.6 mm from antenna base to : reference plane offset height was measured 4.4 Antenna Type : ASH700228D NONE Serial Number : 700228D2052 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0716 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : 20 m Date Installed : 2000-08-15 Date Removed : 2002-03-07 Additional Information : According to NGS 63.6 mm from antenna base to : reference plane offset height was measured 4.5 Antenna Type : ASH700228D NONE Serial Number : 700228D2052 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0723 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : 20 m Date Installed : 2002-03-07 Date Removed : 2002-03-19 Additional Information : According to NGS 63.6 mm from antenna base to : reference plane offset height was measured 4.6 Antenna Type : ASH700228D NONE Serial Number : 700228D2052 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0692 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : 20 m Date Installed : 2002-03-19 Date Removed : 2002-06-21 Additional Information : According to NGS 63.6 mm from antenna base to : reference plane offset height was measured 4.7 Antenna Type : ASH700228D NONE Serial Number : 700228D2052 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0804 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : 20 m Date Installed : 2002-06-21 Date Removed : 2002-07-13 Additional Information : According to NGS 63.6 mm from antenna base to : reference plane offset height was measured 4.8 Antenna Type : ASH700228D NONE Serial Number : 700228D2052 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0806 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : 20 m Date Installed : 2002-07-13 Date Removed : 2002-09-30 Additional Information : According to NGS 63.6 mm from antenna base to : reference plane offset height was measured 4.9 Antenna Type : ASH700228D NONE Serial Number : 700228D2052 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0723 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : 20 m Date Installed : 2002-09-30 Date Removed : 2003-01-17 Additional Information : According to NGS 63.6 mm from antenna base to : reference plane offset height was measured 4.10 Antenna Type : TRM41249.00 NONE Serial Number : 12383017 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0817 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : 30 m Date Installed : 2003-01-17 Date Removed : 2016-05-16T14:00Z Additional Information : (multiple lines) 4.11 Antenna Type : LEIAR10 NONE Serial Number : 18245004 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0800 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : 30 m Date Installed : 2016-05-16T16:00Z Date Removed : 2021-05-12T15:00Z Additional Information : (multiple lines) 4.12 Antenna Type : TRM115000.00 NONE Serial Number : 60413G0003 Antenna Reference Point : BAM Marker->ARP Up Ecc. (m) : 0.0820 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : 30 m Date Installed : 2021-05-12T15:26Z 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.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) : dy (m) : dz (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 : (H-MASER/CESIUM/QUARTZ/INTERNAL/RUBIDIUM) Input Frequency : Effective Dates : (CCYY-MM-DD/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.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 : Manufacturer : Serial Number : Data Sampling Interval : 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) 8.1.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 : Manufacturer : Serial Number : Data Sampling Interval : Accuracy : (mbar) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : CCYY-MM-DD/CCYY-MM-DD Notes : (multiple lines) 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 : Manufacturer : Serial Number : Data Sampling Interval : 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) 8.3.x Temp. Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy : (hPa) 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) 8.4.1 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) 8.4.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) 8.5.1 Other Instrumentation : NONE 8.5.x Other Instrumentation : 9. Local Ongoing Conditions Possibly Affecting Computed Position 9.1.x Radio Interferences : (TV/CELL PHONE ANTENNA/RADAR/etc) Observed Degredations : (SN RATIO/DATA GAPS/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) 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.x Signal Obstructions : (TREES/BUILDLINGS/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 : Instituto Nacional de Estadistica : y Geografia Preferred Abbreviation : INEGI Mailing Address : Calle 60 #378 Col. Centro Primary Contact Contact Name : Florencio Sanchez Telephone (primary) : (52) 999 9-42-17-40 ext. 8616 Telephone (secondary) : Fax : E-mail : Florencio.Sanchez@inegi.org.mx Secondary Contact Contact Name : Gabriel Gaytan Rios Telephone (primary) : (52) 449 9-10-53-00 Ext. 4169 Telephone (secondary) : Fax : E-mail : gabriel.gaytan@inegi.org.mx Additional Information : (multiple lines) 12. Responsible Agency (if different from 11.) Agency : Instituto Nacional de Estadistica : y Geografia Preferred Abbreviation : INEGI Mailing Address : Av. Heroe de Nacozari #2301, Puerta 8 Mezzanine Primary Contact Contact Name : Jose Guillermo Gasca Moncayo Telephone (primary) : (52) 449 9105300 Ext. 4944 Telephone (secondary) : Fax : E-mail : guillermo.gasca@inegi.org.mx Secondary Contact Contact Name : Guido Alejandro Gonzalez Franco Telephone (primary) : (52) 449 9105300 Ext. 5872 Telephone (secondary) : Fax : E-mail : guido.gonzalez@inegi.org.mx Additional Information : (multiple lines) 13. More Information Primary Data Center : ftp://geodesia.inegi.org.mx Secondary Data Center : https://geodesy.noaa.gov/corsdata/ URL for More Information : http://www.inegi.org.mx/ Hardcopy on File Site Map : (Y or URL) Site Diagram : (Y) Horizon Mask : (Y) Monument Description : (Y) Site Pictures : (Y) Additional Information : IGS RNAAC SIR Antenna Graphics with Dimensions / ----------------------+--------------------- \ <-- 0.0714 L1 + + + <-- 0.0682 L2 \ -------------------------------------------- / \ / \ / \-----+-----/ <-- 0.0000 ARP=TOP=BPA <-- 0.3396 --> Notches LEIAR10 . ^ . <-- 0.1362 . . . . . . . . / \ | | | | <-- 0.0362 Notch +-----____ ____-----+ -----____ ____-\ \- +--x--+ \_\ <-- 0.0000 BAM=ARP <-- 0.2400 --> TRM115000.00 / --------------------------------------------- \ + + \ --------------------------------------------- / \ / \ / \-----x-----/ <-- 0.0000 BAM=ARP RXC=NRP <-- 0.3396 --> Notches