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 18, 2025 19:40:37 EST
AF9504 ***********************************************************************
AF9504 HT_MOD - This is a Height Modernization Survey Station.
AF9504 CORS - This is a GPS Continuously Operating Reference Station.
AF9504 DESIGNATION - POINT BLUNT 1 CORS ARP
AF9504 CORS_ID - PBL1
AF9504 PID - AF9504
AF9504 STATE/COUNTY- CA/MARIN
AF9504 COUNTRY - US
AF9504 USGS QUAD - SAN FRANCISCO NORTH (2018)
AF9504
AF9504 *CURRENT SURVEY CONTROL
AF9504 ______________________________________________________________________
AF9504* NAD 83(2011) POSITION- 37 51 10.98469(N) 122 25 08.16132(W) ADJUSTED
AF9504* NAD 83(2011) ELLIP HT- -7.550 (meters) (06/??/19) ADJUSTED
AF9504* NAD 83(2011) EPOCH - 2010.00
AF9504* NAVD 88 ORTHO HEIGHT - 24.93 (meters) 81.8 (feet) GPS OBS
AF9504 ______________________________________________________________________
AF9504 NAVD 88 orthometric height was determined with geoid model GEOID03
AF9504 GEOID HEIGHT - -32.412 (meters) GEOID03
AF9504 GEOID HEIGHT - -32.438 (meters) GEOID18
AF9504 NAD 83(2011) X - -2,703,285.867 (meters) COMP
AF9504 NAD 83(2011) Y - -4,256,587.138 (meters) COMP
AF9504 NAD 83(2011) Z - 3,892,573.557 (meters) COMP
AF9504
AF9504 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
AF9504 Standards:
AF9504 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
AF9504 Horiz Ellip SD_N SD_E SD_h (unitless)
AF9504 -------------------------------------------------------------------
AF9504 NETWORK 0.21 0.58 0.09 0.08 0.30 0.17069300
AF9504 -------------------------------------------------------------------
AF9504
AF9504.The coordinates were established by GPS observations
AF9504.and adjusted by the National Geodetic Survey in June 2019.
AF9504
AF9504.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
AF9504.been affixed to the stable North American Tectonic Plate.
AF9504
AF9504.The coordinates are valid at the epoch date displayed above
AF9504.which is a decimal equivalence of Year/Month/Day.
AF9504
AF9504.Due to the release of the International GNSS Service (IGS) 2014
AF9504.realization of the International Terrestrial Reference Frame of 2014
AF9504.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
AF9504.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
AF9504.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
AF9504.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
AF9504.currently published epoch of 2010.00.
AF9504
AF9504.Additional information on MYCS2 is available at
AF9504.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
AF9504
AF9504.The orthometric height was determined by GPS observations and a
AF9504.high-resolution geoid model using precise GPS observation and
AF9504.processing techniques.
AF9504
AF9504.Significant digits in the geoid height do not necessarily reflect accuracy.
AF9504.GEOID18 height accuracy estimate available here.
AF9504
AF9504.The PID for the CORS L1 Phase Center is AJ7874.
AF9504
AF9504.Click photographs - Photos may exist for this station.
AF9504
AF9504.The XYZ, and position/ellipsoidal ht. are equivalent.
AF9504
AF9504.The ellipsoidal height was determined by GPS observations
AF9504.and is referenced to NAD 83.
AF9504
AF9504. The following values were computed from the NAD 83(2011) position.
AF9504
AF9504; North East Units Scale Factor Converg.
AF9504;SPC CA 3 - 651,894.495 1,831,143.093 MT 0.99993076 -1 10 29.4
AF9504;SPC CA 3 - 2,138,757.19 6,007,675.30 sFT 0.99993076 -1 10 29.4
AF9504;UTM 10 - 4,189,670.023 551,117.918 MT 0.99963218 +0 21 23.7
AF9504
AF9504! - Elev Factor x Scale Factor = Combined Factor
AF9504!SPC CA 3 - 1.00000118 x 0.99993076 = 0.99993194
AF9504!UTM 10 - 1.00000118 x 0.99963218 = 0.99963336
AF9504
AF9504_U.S. NATIONAL GRID SPATIAL ADDRESS: 10SEG5111789670(NAD 83)
AF9504
AF9504 SUPERSEDED SURVEY CONTROL
AF9504
AF9504 ELLIP H (06/27/12) -7.543 (m) GP(2010.00) 0 0
AF9504 NAD 83(2011)- 37 51 10.98616(N) 122 25 08.16028(W) AD(2010.00) c
AF9504 NAD 83(2011)- 37 51 10.98477(N) 122 25 08.16126(W) AD(2010.00) c
AF9504 ELLIP H (08/??/11) -7.550 (m) GP(2010.00) c c
AF9504 ELLIP H (02/10/07) -7.542 (m) GP(2007.00)
AF9504 NAD 83(2007)- 37 51 10.98242(N) 122 25 08.15906(W) AD(2007.00) c
AF9504 NAD 83(CORS)- 37 51 10.97845(N) 122 25 08.15490(W) AD(2002.00) c
AF9504 ELLIP H (03/??/02) -7.533 (m) GP(2002.00) c c
AF9504 NAD 83(CORS)- 37 51 10.97476(N) 122 25 08.15033(W) AD(1997.00) c
AF9504 ELLIP H (07/??/00) -7.530 (m) GP(1997.00) c c
AF9504 NAD 83(CORS)- 37 51 10.97455(N) 122 25 08.15018(W) AD(1997.00) c
AF9504 ELLIP H (04/??/96) -7.501 (m) GP(1997.00) c c
AF9504 NAD 83(CORS)- 37 51 10.97385(N) 122 25 08.14932(W) AD(1996.00) c
AF9504 ELLIP H (04/??/96) -7.501 (m) GP(1996.00) c c
AF9504 NAVD 88 (04/03/01) 24.8 (m) UNKNOWN model used GPS OBS
AF9504 NAVD 88 (03/23/01) 24.9 (m) UNKNOWN model used GPS OBS
AF9504
AF9504.Superseded values are not recommended for survey control.
AF9504
AF9504.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
AF9504.See file dsdata.pdf to determine how the superseded data were derived.
AF9504
AF9504_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
AF9504
AF9504 STATION DESCRIPTION
AF9504
AF9504'DESCRIBED BY NATIONAL GEODETIC SURVEY 2019
AF9504'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
AF9504'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
AF9504'ACCESSIBLE AT THE WORLDWIDE WEB.
AF9504'https://geodesy.noaa.gov/CORS/data.shtml
AF9504'https://geodesy.noaa.gov/CORS
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