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 20, 2025 01:26:23 EST
DL3927 ***********************************************************************
DL3927 HT_MOD - This is a Height Modernization Survey Station.
DL3927 CORS - This is a GPS Continuously Operating Reference Station.
DL3927 DESIGNATION - CHILTON CNTY CTHS CORS ARP
DL3927 CORS_ID - ALCL
DL3927 PID - DL3927
DL3927 STATE/COUNTY- AL/CHILTON
DL3927 COUNTRY - US
DL3927 USGS QUAD - CLANTON WEST (2018)
DL3927
DL3927 *CURRENT SURVEY CONTROL
DL3927 ______________________________________________________________________
DL3927* NAD 83(2011) POSITION- 32 50 23.77790(N) 086 37 47.38482(W) ADJUSTED
DL3927* NAD 83(2011) ELLIP HT- 169.003 (meters) (06/??/19) ADJUSTED
DL3927* NAD 83(2011) EPOCH - 2010.00
DL3927* NAVD 88 ORTHO HEIGHT - 197.74 (meters) 648.8 (feet) GPS OBS
DL3927 ______________________________________________________________________
DL3927 GEOID HEIGHT - -28.739 (meters) GEOID18
DL3927 NAD 83(2011) X - 315,347.196 (meters) COMP
DL3927 NAD 83(2011) Y - -5,354,986.912 (meters) COMP
DL3927 NAD 83(2011) Z - 3,439,149.289 (meters) COMP
DL3927
DL3927 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
DL3927 Standards:
DL3927 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
DL3927 Horiz Ellip SD_N SD_E SD_h (unitless)
DL3927 -------------------------------------------------------------------
DL3927 NETWORK 0.16 0.36 0.05 0.07 0.18 0.03040100
DL3927 -------------------------------------------------------------------
DL3927
DL3927.The coordinates were established by GPS observations
DL3927.and adjusted by the National Geodetic Survey in June 2019.
DL3927
DL3927.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
DL3927.been affixed to the stable North American Tectonic Plate.
DL3927
DL3927.The coordinates are valid at the epoch date displayed above
DL3927.which is a decimal equivalence of Year/Month/Day.
DL3927
DL3927.Due to the release of the International GNSS Service (IGS) 2014
DL3927.realization of the International Terrestrial Reference Frame of 2014
DL3927.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
DL3927.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
DL3927.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
DL3927.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
DL3927.currently published epoch of 2010.00.
DL3927
DL3927.Additional information on MYCS2 is available at
DL3927.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
DL3927
DL3927.The orthometric height was determined by GPS observations and a
DL3927.high-resolution geoid model using precise GPS observation and
DL3927.processing techniques.
DL3927
DL3927.Significant digits in the geoid height do not necessarily reflect accuracy.
DL3927.GEOID18 height accuracy estimate available here.
DL3927
DL3927.The PID for the CORS L1 Phase Center is DQ2083.
DL3927
DL3927.Click photographs - Photos may exist for this station.
DL3927
DL3927.The XYZ, and position/ellipsoidal ht. are equivalent.
DL3927
DL3927.The ellipsoidal height was determined by GPS observations
DL3927.and is referenced to NAD 83.
DL3927
DL3927. The following values were computed from the NAD 83(2011) position.
DL3927
DL3927; North East Units Scale Factor Converg.
DL3927;SPC AL W - 315,197.805 681,462.652 MT 1.00001513 +0 28 18.9
DL3927;UTM 16 - 3,633,603.404 534,642.225 MT 0.99961480 +0 12 02.7
DL3927
DL3927! - Elev Factor x Scale Factor = Combined Factor
DL3927!SPC AL W - 0.99997347 x 1.00001513 = 0.99998860
DL3927!UTM 16 - 0.99997347 x 0.99961480 = 0.99958828
DL3927
DL3927_U.S. NATIONAL GRID SPATIAL ADDRESS: 16SEB3464233603(NAD 83)
DL3927
DL3927 SUPERSEDED SURVEY CONTROL
DL3927
DL3927 NAD 83(2011)- 32 50 23.77769(N) 086 37 47.38480(W) AD(2010.00) c
DL3927 ELLIP H (08/??/11) 169.005 (m) GP(2010.00) c c
DL3927 NAD 83(CORS)- 32 50 23.77817(N) 086 37 47.38547(W) AD(2002.00) c
DL3927 ELLIP H (08/??/09) 169.007 (m) GP(2002.00) c c
DL3927
DL3927.Superseded values are not recommended for survey control.
DL3927
DL3927.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
DL3927.See file dsdata.pdf to determine how the superseded data were derived.
DL3927
DL3927_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
DL3927
DL3927 STATION DESCRIPTION
DL3927
DL3927'DESCRIBED BY NATIONAL GEODETIC SURVEY 2019
DL3927'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
DL3927'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
DL3927'ACCESSIBLE AT THE WORLDWIDE WEB.
DL3927'https://geodesy.noaa.gov/CORS/data.shtml
DL3927'https://geodesy.noaa.gov/CORS
*** retrieval complete.
Elapsed Time = 00:00:03