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 07:36:34 EST
DG6568 ***********************************************************************
DG6568 HT_MOD - This is a Height Modernization Survey Station.
DG6568 CORS - This is a GPS Continuously Operating Reference Station.
DG6568 DESIGNATION - COVINGTON CORS ARP
DG6568 CORS_ID - COVG
DG6568 PID - DG6568
DG6568 STATE/COUNTY- LA/ST TAMMANY
DG6568 COUNTRY - US
DG6568 USGS QUAD - COVINGTON (2018)
DG6568
DG6568 *CURRENT SURVEY CONTROL
DG6568 ______________________________________________________________________
DG6568* NAD 83(2011) POSITION- 30 28 33.26965(N) 090 05 43.92270(W) ADJUSTED
DG6568* NAD 83(2011) ELLIP HT- -4.569 (meters) (06/??/19) ADJUSTED
DG6568* NAD 83(2011) EPOCH - 2010.00
DG6568* NAVD 88 ORTHO HEIGHT - 22.27 (meters) 73.1 (feet) GPS OBS
DG6568* NAVD 88 EPOCH - 2009.55
DG6568 **This station is located in a suspected subsidence area (see below).
DG6568 ______________________________________________________________________
DG6568 NAVD 88 orthometric height was determined with an earlier geoid model
DG6568 GEOID HEIGHT - -26.829 (meters) GEOID18
DG6568 NAD 83(2011) X - -9,173.418 (meters) COMP
DG6568 NAD 83(2011) Y - -5,501,676.851 (meters) COMP
DG6568 NAD 83(2011) Z - 3,215,950.678 (meters) COMP
DG6568
DG6568 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
DG6568 Standards:
DG6568 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
DG6568 Horiz Ellip SD_N SD_E SD_h (unitless)
DG6568 -------------------------------------------------------------------
DG6568 NETWORK 0.27 0.75 0.09 0.13 0.38 0.07129900
DG6568 -------------------------------------------------------------------
DG6568
DG6568.The coordinates were established by GPS observations
DG6568.and adjusted by the National Geodetic Survey in June 2019.
DG6568
DG6568.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
DG6568.been affixed to the stable North American Tectonic Plate.
DG6568
DG6568.The coordinates are valid at the epoch date displayed above
DG6568.which is a decimal equivalence of Year/Month/Day.
DG6568
DG6568.Due to the release of the International GNSS Service (IGS) 2014
DG6568.realization of the International Terrestrial Reference Frame of 2014
DG6568.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
DG6568.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
DG6568.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
DG6568.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
DG6568.currently published epoch of 2010.00.
DG6568
DG6568.Additional information on MYCS2 is available at
DG6568.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
DG6568
DG6568.** This station is in an area of known vertical motion. Due to the
DG6568.** variability of land subsidence, uplift, and crustal motion, NGS has,
DG6568.** determined the orthometric heights for marks in these suspect
DG6568.** subsidence areas should be considered valid only at the epoch date
DG6568.** associated with the orthometric height. These heights must always
DG6568.** be validated when used as control. All previously superseded
DG6568.** orthometric heights are now considered suspect and are available
DG6568.** in the superseded section. NGS does not recommend using suspect
DG6568.** or superseded heights as control.
DG6568
DG6568.The orthometric height was determined by GPS observations and a
DG6568.high-resolution geoid model using precise GPS observation and
DG6568.processing techniques.
DG6568
DG6568.Significant digits in the geoid height do not necessarily reflect accuracy.
DG6568.GEOID18 height accuracy estimate available here.
DG6568
DG6568.The PID for the CORS L1 Phase Center is DR1474.
DG6568
DG6568.Click photographs - Photos may exist for this station.
DG6568
DG6568.The XYZ, and position/ellipsoidal ht. are equivalent.
DG6568
DG6568.The ellipsoidal height was determined by GPS observations
DG6568.and is referenced to NAD 83.
DG6568
DG6568. The following values were computed from the NAD 83(2011) position.
DG6568
DG6568; North East Units Scale Factor Converg.
DG6568;SPC LA S - 219,662.521 1,118,849.609 MT 0.99996000 +0 37 08.1
DG6568;SPC LA S - 720,676.12 3,670,759.09 sFT 0.99996000 +0 37 08.1
DG6568;UTM 15 - 3,375,108.189 778,841.154 MT 1.00055931 +1 28 26.5
DG6568
DG6568! - Elev Factor x Scale Factor = Combined Factor
DG6568!SPC LA S - 1.00000072 x 0.99996000 = 0.99996072
DG6568!UTM 15 - 1.00000072 x 1.00055931 = 1.00056003
DG6568
DG6568_U.S. NATIONAL GRID SPATIAL ADDRESS: 15RYP7884175108(NAD 83)
DG6568
DG6568 SUPERSEDED SURVEY CONTROL
DG6568
DG6568 ELLIP H (06/27/12) -4.556 (m) GP(2010.00) 0 0
DG6568 NAD 83(2011)- 30 28 33.26959(N) 090 05 43.92274(W) AD(2010.00) c
DG6568 NAD 83(2011)- 30 28 33.26972(N) 090 05 43.92269(W) AD(2010.00) c
DG6568 ELLIP H (08/??/11) -4.563 (m) GP(2010.00) c c
DG6568 ELLIP H (02/10/07) -4.561 (m) GP( )
DG6568 NAD 83(2007)- 30 28 33.26965(N) 090 05 43.92326(W) AD( ) c
DG6568 NAD 83(CORS)- 30 28 33.26965(N) 090 05 43.92326(W) AD(2002.00) c
DG6568 ELLIP H (08/??/04) -4.561 (m) GP(2002.00) c c
DG6568 NAVD 88 (12/26/12) 22.30 (m) GEOID12A model used GP(2009.55)
DG6568 NAVD 88 (06/22/05) 22.39 (m) GEOID03 model used GP(2004.65)
DG6568
DG6568.Superseded values are not recommended for survey control.
DG6568
DG6568.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
DG6568.See file dsdata.pdf to determine how the superseded data were derived.
DG6568
DG6568_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
DG6568
DG6568 STATION DESCRIPTION
DG6568
DG6568'DESCRIBED BY NATIONAL GEODETIC SURVEY 2019
DG6568'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
DG6568'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
DG6568'ACCESSIBLE AT THE WORLDWIDE WEB.
DG6568'https://geodesy.noaa.gov/CORS/data.shtml
DG6568'https://geodesy.noaa.gov/CORS
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