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 16:25:19 EST
AF9571 ***********************************************************************
AF9571 HT_MOD - This is a Height Modernization Survey Station.
AF9571 CORS - This is a GPS Continuously Operating Reference Station.
AF9571 DESIGNATION - MILLERS FERRY 1 CORS ARP
AF9571 CORS_ID - MLF1
AF9571 PID - AF9571
AF9571 STATE/COUNTY- AL/WILCOX
AF9571 COUNTRY - US
AF9571 USGS QUAD - LEE LONG BRIDGE (2018)
AF9571
AF9571 *CURRENT SURVEY CONTROL
AF9571 ______________________________________________________________________
AF9571* NAD 83(2011) POSITION- 32 05 24.91768(N) 087 23 30.50401(W) ADJUSTED
AF9571* NAD 83(2011) ELLIP HT- 10.428 (meters) (06/??/19) ADJUSTED
AF9571* NAD 83(2011) EPOCH - 2010.00
AF9571* NAVD 88 ORTHO HEIGHT - 38.19 (meters) 125.3 (feet) GPS OBS
AF9571 ______________________________________________________________________
AF9571 NAVD 88 orthometric height was determined with an earlier geoid model
AF9571 GEOID HEIGHT - -27.913 (meters) GEOID18
AF9571 NAD 83(2011) X - 246,130.030 (meters) COMP
AF9571 NAD 83(2011) Y - -5,403,153.780 (meters) COMP
AF9571 NAD 83(2011) Z - 3,368,920.186 (meters) COMP
AF9571
AF9571 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
AF9571 Standards:
AF9571 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
AF9571 Horiz Ellip SD_N SD_E SD_h (unitless)
AF9571 -------------------------------------------------------------------
AF9571 NETWORK 0.20 0.51 0.07 0.09 0.26 -0.04407300
AF9571 -------------------------------------------------------------------
AF9571
AF9571.The coordinates were established by GPS observations
AF9571.and adjusted by the National Geodetic Survey in June 2019.
AF9571
AF9571.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
AF9571.been affixed to the stable North American Tectonic Plate.
AF9571
AF9571.The coordinates are valid at the epoch date displayed above
AF9571.which is a decimal equivalence of Year/Month/Day.
AF9571
AF9571.Due to the release of the International GNSS Service (IGS) 2014
AF9571.realization of the International Terrestrial Reference Frame of 2014
AF9571.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
AF9571.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
AF9571.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
AF9571.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
AF9571.currently published epoch of 2010.00.
AF9571
AF9571.Additional information on MYCS2 is available at
AF9571.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
AF9571
AF9571.The orthometric height was determined by GPS observations and a
AF9571.high-resolution geoid model using precise GPS observation and
AF9571.processing techniques.
AF9571
AF9571.Significant digits in the geoid height do not necessarily reflect accuracy.
AF9571.GEOID18 height accuracy estimate available here.
AF9571
AF9571.The PID for the CORS L1 Phase Center is AJ7903.
AF9571
AF9571.Click photographs - Photos may exist for this station.
AF9571
AF9571.The XYZ, and position/ellipsoidal ht. are equivalent.
AF9571
AF9571.The ellipsoidal height was determined by GPS observations
AF9571.and is referenced to NAD 83.
AF9571
AF9571. The following values were computed from the NAD 83(2011) position.
AF9571
AF9571; North East Units Scale Factor Converg.
AF9571;SPC AL W - 231,736.860 610,212.822 MT 0.99993462 +0 03 26.9
AF9571;UTM 16 - 3,550,506.999 463,027.938 MT 0.99961686 -0 12 29.3
AF9571
AF9571! - Elev Factor x Scale Factor = Combined Factor
AF9571!SPC AL W - 0.99999836 x 0.99993462 = 0.99993298
AF9571!UTM 16 - 0.99999836 x 0.99961686 = 0.99961522
AF9571
AF9571_U.S. NATIONAL GRID SPATIAL ADDRESS: 16SDA6302750506(NAD 83)
AF9571
AF9571 SUPERSEDED SURVEY CONTROL
AF9571
AF9571 ELLIP H (06/27/12) 10.430 (m) GP(2010.00) 0 0
AF9571 NAD 83(2011)- 32 05 24.91693(N) 087 23 30.50397(W) AD(2010.00) c
AF9571 NAD 83(2011)- 32 05 24.91743(N) 087 23 30.50406(W) AD(2010.00) c
AF9571 ELLIP H (08/??/11) 10.430 (m) GP(2010.00) c c
AF9571 ELLIP H (02/10/07) 10.443 (m) GP(2002.00)
AF9571 NAD 83(2007)- 32 05 24.91710(N) 087 23 30.50447(W) AD(2002.00) c
AF9571 NAD 83(CORS)- 32 05 24.91710(N) 087 23 30.50447(W) AD(2002.00) c
AF9571 ELLIP H (07/??/05) 10.443 (m) GP(2002.00) c c
AF9571 NAD 83(CORS)- 32 05 24.91717(N) 087 23 30.50476(W) AD(2002.00) c
AF9571 ELLIP H (03/??/02) 10.459 (m) GP(2002.00) c c
AF9571 NAD 83(CORS)- 32 05 24.91691(N) 087 23 30.50514(W) AD(1997.00) c
AF9571 ELLIP H (04/??/00) 10.454 (m) GP(1997.00) c c
AF9571 NAD 83(CORS)- 32 05 24.91685(N) 087 23 30.50527(W) AD(1997.00) c
AF9571 ELLIP H (11/??/96) 10.485 (m) GP(1997.00) c c
AF9571 NAD 83(CORS)- 32 05 24.91685(N) 087 23 30.50527(W) AD(1996.00) c
AF9571 ELLIP H (11/??/96) 10.485 (m) GP(1996.00) c c
AF9571 NAVD 88 (09/21/99) 38.3 (m) UNKNOWN model used GPS OBS
AF9571 NAVD 88 (08/31/99) 38.3 (m) GEOID96 model used GPS OBS
AF9571
AF9571.Superseded values are not recommended for survey control.
AF9571
AF9571.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
AF9571.See file dsdata.pdf to determine how the superseded data were derived.
AF9571
AF9571_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
AF9571
AF9571 STATION DESCRIPTION
AF9571
AF9571'DESCRIBED BY NATIONAL GEODETIC SURVEY 2019
AF9571'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
AF9571'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
AF9571'ACCESSIBLE AT THE WORLDWIDE WEB.
AF9571'https://geodesy.noaa.gov/CORS/data.shtml
AF9571'https://geodesy.noaa.gov/CORS
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