The NGS Data Sheet
See file dsdata.pdf for more information about the datasheet.
PROGRAM = datasheet95, VERSION = 8.12.5.19
Starting Datasheet Retrieval...
1 National Geodetic Survey, Retrieval Date = FEBRUARY 19, 2025 11:07:19 EST
AM7021 ***********************************************************************
AM7021 CORS - This is a GPS Continuously Operating Reference Station.
AM7021 DESIGNATION - OHLONE PARK CORS ARP
AM7021 CORS_ID - OHLN
AM7021 PID - AM7021
AM7021 STATE/COUNTY- CA/CONTRA COSTA
AM7021 COUNTRY - US
AM7021 USGS QUAD - MARE ISLAND (2018)
AM7021
AM7021 *CURRENT SURVEY CONTROL
AM7021 ______________________________________________________________________
AM7021* NAD 83(2011) POSITION- 38 00 22.49873(N) 122 16 22.70915(W) ADJUSTED
AM7021* NAD 83(2011) ELLIP HT- -0.006 (meters) (08/??/24) ADJUSTED
AM7021* NAD 83(2011) EPOCH - 2010.00
AM7021 ______________________________________________________________________
AM7021 GEOID HEIGHT - -32.241 (meters) GEOID18
AM7021 NAD 83(2011) X - -2,686,855.682 (meters) COMP
AM7021 NAD 83(2011) Y - -4,254,627.220 (meters) COMP
AM7021 NAD 83(2011) Z - 3,905,990.576 (meters) COMP
AM7021
AM7021.Formal positional accuracy estimates are not available for this CORS
AM7021.because its coordinates were determined in part using modeled
AM7021.velocities. Approximate one-sigma accuracies for latitude, longitude,
AM7021.and ellipsoid height can be obtained from the short-term time series.
AM7021.Additional information regarding modeled velocities is available on
AM7021.the CORS Coordinates for MYCS2 web page:
AM7021.https://www.ngs.noaa.gov/CORS/news/mycs2/mycs2.shtml.
AM7021
AM7021.The coordinates were established by GPS observations
AM7021.and adjusted by the National Geodetic Survey in August 2024.
AM7021
AM7021.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
AM7021.been affixed to the stable North American Tectonic Plate.
AM7021
AM7021.The coordinates are valid at the epoch date displayed above
AM7021.which is a decimal equivalence of Year/Month/Day.
AM7021
AM7021.Due to the release of the International GNSS Service (IGS) 2014
AM7021.realization of the International Terrestrial Reference Frame of 2014
AM7021.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
AM7021.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
AM7021.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
AM7021.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
AM7021.currently published epoch of 2010.00.
AM7021
AM7021.Additional information on MYCS2 is available at
AM7021.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
AM7021
AM7021.Significant digits in the geoid height do not necessarily reflect accuracy.
AM7021.GEOID18 height accuracy estimate available here.
AM7021
AM7021.The PID for the CORS L1 Phase Center is DS2697.
AM7021
AM7021.Click photographs - Photos may exist for this station.
AM7021
AM7021.The XYZ, and position/ellipsoidal ht. are equivalent.
AM7021
AM7021.The ellipsoidal height was determined by GPS observations
AM7021.and is referenced to NAD 83.
AM7021
AM7021. The following values were computed from the NAD 83(2011) position.
AM7021
AM7021; North East Units Scale Factor Converg.
AM7021;SPC CA 3 - 668,641.258 1,844,307.282 MT 0.99993907 -1 05 07.7
AM7021;SPC CA 3 - 2,193,700.53 6,050,864.81 sFT 0.99993907 -1 05 07.7
AM7021;UTM 10 - 4,206,757.782 563,825.874 MT 0.99965017 +0 26 51.6
AM7021
AM7021! - Elev Factor x Scale Factor = Combined Factor
AM7021!SPC CA 3 - 1.00000000 x 0.99993907 = 0.99993907
AM7021!UTM 10 - 1.00000000 x 0.99965017 = 0.99965017
AM7021
AM7021_U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEH6382506757(NAD 83)
AM7021
AM7021 SUPERSEDED SURVEY CONTROL
AM7021
AM7021 NAD 83(2011)- 38 00 22.49819(N) 122 16 22.70872(W) AD(2010.00) c
AM7021 ELLIP H (06/??/19) -0.015 (m) GP(2010.00) c c
AM7021 NAD 83(2011)- 38 00 22.49824(N) 122 16 22.70886(W) AD(2010.00) c
AM7021 ELLIP H (08/??/11) -0.021 (m) GP(2010.00) c c
AM7021 NAD 83(CORS)- 38 00 22.49334(N) 122 16 22.70444(W) AD(2002.00) c
AM7021 ELLIP H (08/??/06) -0.005 (m) GP(2002.00) c c
AM7021 NAD 83(CORS)- 38 00 22.49332(N) 122 16 22.70468(W) AD(2002.00) c
AM7021 ELLIP H (05/??/02) -0.009 (m) GP(2002.00) c c
AM7021
AM7021.Superseded values are not recommended for survey control.
AM7021
AM7021.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
AM7021.See file dsdata.pdf to determine how the superseded data were derived.
AM7021
AM7021_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
AM7021
AM7021 STATION DESCRIPTION
AM7021
AM7021'DESCRIBED BY NATIONAL GEODETIC SURVEY 2024
AM7021'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
AM7021'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
AM7021'ACCESSIBLE AT THE WORLDWIDE WEB.
AM7021'https://geodesy.noaa.gov/CORS/data.shtml
AM7021'https://geodesy.noaa.gov/CORS
1 National Geodetic Survey, Retrieval Date = FEBRUARY 19, 2025 11:07:19 EST
AM7023 ***********************************************************************
AM7023 HT_MOD - This is a Height Modernization Survey Station.
AM7023 CORS - This is a GPS Continuously Operating Reference Station.
AM7023 DESIGNATION - OHLN ECC REF DIMPLE
AM7023 CORS_ID - OHLN
AM7023 PID - AM7023
AM7023 STATE/COUNTY- CA/CONTRA COSTA
AM7023 COUNTRY - US
AM7023 USGS QUAD - MARE ISLAND (2018)
AM7023
AM7023 *CURRENT SURVEY CONTROL
AM7023 ______________________________________________________________________
AM7023* NAD 83(2011) POSITION- 38 00 22.49873(N) 122 16 22.70915(W) ADJUSTED
AM7023* NAD 83(2011) ELLIP HT- -0.014 (meters) (08/??/24) ADJUSTED
AM7023* NAD 83(2011) EPOCH - 2010.00
AM7023* NAVD 88 ORTHO HEIGHT - 32.23 (meters) 105.7 (feet) GPS OBS
AM7023 ______________________________________________________________________
AM7023 NAVD 88 orthometric height was determined with geoid model GEOID09
AM7023 GEOID HEIGHT - -32.236 (meters) GEOID09
AM7023 GEOID HEIGHT - -32.241 (meters) GEOID18
AM7023 NAD 83(2011) X - -2,686,855.678 (meters) COMP
AM7023 NAD 83(2011) Y - -4,254,627.214 (meters) COMP
AM7023 NAD 83(2011) Z - 3,905,990.571 (meters) COMP
AM7023 LAPLACE CORR - 2.73 (seconds) DEFLEC18
AM7023
AM7023.Formal positional accuracy estimates are not available for this CORS
AM7023.because its coordinates were determined in part using modeled
AM7023.velocities. Approximate one-sigma accuracies for latitude, longitude,
AM7023.and ellipsoid height can be obtained from the short-term time series.
AM7023.Additional information regarding modeled velocities is available on
AM7023.the CORS Coordinates for MYCS2 web page:
AM7023.https://www.ngs.noaa.gov/CORS/news/mycs2/mycs2.shtml.
AM7023
AM7023.The horizontal coordinates were established by GPS observations
AM7023.and adjusted by the National Geodetic Survey in August 2024.
AM7023
AM7023.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
AM7023.been affixed to the stable North American Tectonic Plate.
AM7023
AM7023.The horizontal coordinates are valid at the epoch date displayed above
AM7023.which is a decimal equivalence of Year/Month/Day.
AM7023
AM7023.Due to the release of the International GNSS Service (IGS) 2014
AM7023.realization of the International Terrestrial Reference Frame of 2014
AM7023.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
AM7023.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
AM7023.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
AM7023.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
AM7023.currently published epoch of 2010.00.
AM7023
AM7023.Additional information on MYCS2 is available at
AM7023.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
AM7023
AM7023.The orthometric height was determined by GPS observations and a
AM7023.high-resolution geoid model using precise GPS observation and
AM7023.processing techniques.
AM7023
AM7023.Significant digits in the geoid height do not necessarily reflect accuracy.
AM7023.GEOID18 height accuracy estimate available here.
AM7023
AM7023.Click photographs - Photos may exist for this station.
AM7023
AM7023.The XYZ, and position/ellipsoidal ht. are equivalent.
AM7023
AM7023.The Laplace correction was computed from DEFLEC18 derived deflections.
AM7023
AM7023.The ellipsoidal height was determined by GPS observations
AM7023.and is referenced to NAD 83.
AM7023
AM7023. The following values were computed from the NAD 83(2011) position.
AM7023
AM7023; North East Units Scale Factor Converg.
AM7023;SPC CA 3 - 668,641.258 1,844,307.282 MT 0.99993907 -1 05 07.7
AM7023;SPC CA 3 - 2,193,700.53 6,050,864.81 sFT 0.99993907 -1 05 07.7
AM7023;UTM 10 - 4,206,757.782 563,825.874 MT 0.99965017 +0 26 51.6
AM7023
AM7023! - Elev Factor x Scale Factor = Combined Factor
AM7023!SPC CA 3 - 1.00000000 x 0.99993907 = 0.99993907
AM7023!UTM 10 - 1.00000000 x 0.99965017 = 0.99965017
AM7023
AM7023_U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEH6382506757(NAD 83)
AM7023
AM7023 SUPERSEDED SURVEY CONTROL
AM7023
AM7023 NAD 83(2011)- 38 00 22.49819(N) 122 16 22.70872(W) AD(2010.00) A
AM7023 ELLIP H (06/??/19) -0.023 (m) GP(2010.00) 4 1
AM7023 NAD 83(2011)- 38 00 22.49824(N) 122 16 22.70886(W) AD(2010.00) A
AM7023 ELLIP H (08/??/11) -0.029 (m) GP(2010.00) 4 1
AM7023 ELLIP H (02/10/07) -0.014 (m) GP(2007.00)
AM7023 NAD 83(2007)- 38 00 22.49684(N) 122 16 22.70737(W) AD(2007.00) 0
AM7023 NAD 83(CORS)- 38 00 22.49334(N) 122 16 22.70444(W) AD(2002.00) A
AM7023 ELLIP H (08/??/06) -0.013 (m) GP(2002.00) 4 1
AM7023 NAD 83(CORS)- 38 00 22.49332(N) 122 16 22.70468(W) AD(2002.00) A
AM7023 ELLIP H (05/??/02) -0.018 (m) GP(2002.00) 4 1
AM7023 NAVD 88 (10/28/05) 32.25 (m) GEOID03 model used GPS OBS
AM7023
AM7023.Superseded values are not recommended for survey control.
AM7023
AM7023.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
AM7023.See file dsdata.pdf to determine how the superseded data were derived.
AM7023
AM7023_STAMPING: NONE
AM7023
AM7023 HISTORY - Date Condition Report By
AM7023 HISTORY - 2002 MONUMENTED BSL
AM7023
AM7023 STATION DESCRIPTION
AM7023
AM7023'THIS MONUMENT IS ASSOCIATED WITH CORS SITE 'OHLN'
AM7023'LATEST INFORMATION INCLUDING POSITIONS AND VELOCITIES
AM7023'ARE AVAILABLE IN THE COORDINATE AND LOG FILES ACCESSIBLE
AM7023'BY ANONYMOUS FTP OR THE WORLDWIDE WEB.
AM7023' https://geodesy.noaa.gov/corsdata/coord/coord_14
AM7023' https://geodesy.noaa.gov/corsdata/station_log
AM7023' https://geodesy.noaa.gov/CORS
AM7023'RECOVERED AS DESCRIBED.
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