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 06:18:44 EST
DF8773 ***********************************************************************
DF8773 HT_MOD - This is a Height Modernization Survey Station.
DF8773 CORS - This is a GPS Continuously Operating Reference Station.
DF8773 DESIGNATION - HOUSTON 2 COOP CORS ARP
DF8773 CORS_ID - COH2
DF8773 PID - DF8773
DF8773 STATE/COUNTY- TX/HARRIS
DF8773 COUNTRY - US
DF8773 USGS QUAD - BELLAIRE (2019)
DF8773
DF8773 *CURRENT SURVEY CONTROL
DF8773 ______________________________________________________________________
DF8773* NAD 83(2011) POSITION- 29 37 42.69355(N) 095 24 41.74750(W) ADJUSTED
DF8773* NAD 83(2011) ELLIP HT- -10.154 (meters) (06/??/19) ADJUSTED
DF8773* NAD 83(2011) EPOCH - 2010.00
DF8773* NAVD 88 ORTHO HEIGHT - **(meters) **(feet) NOT PUB
DF8773 **This station is in an area of suspected vertical motion (see below).
DF8773 ______________________________________________________________________
DF8773 NAVD 88 orthometric height was determined with geoid model GEOID09
DF8773 GEOID HEIGHT - -27.340 (meters) GEOID09
DF8773 GEOID HEIGHT - -27.233 (meters) GEOID18
DF8773 NAD 83(2011) X - -523,298.817 (meters) COMP
DF8773 NAD 83(2011) Y - -5,523,989.667 (meters) COMP
DF8773 NAD 83(2011) Z - 3,134,641.339 (meters) COMP
DF8773
DF8773 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
DF8773 Standards:
DF8773 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
DF8773 Horiz Ellip SD_N SD_E SD_h (unitless)
DF8773 -------------------------------------------------------------------
DF8773 NETWORK 0.25 0.64 0.07 0.12 0.33 0.02909400
DF8773 -------------------------------------------------------------------
DF8773
DF8773.The coordinates were established by GPS observations
DF8773.and adjusted by the National Geodetic Survey in June 2019.
DF8773
DF8773.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
DF8773.been affixed to the stable North American Tectonic Plate.
DF8773
DF8773.The coordinates are valid at the epoch date displayed above
DF8773.which is a decimal equivalence of Year/Month/Day.
DF8773
DF8773.Due to the release of the International GNSS Service (IGS) 2014
DF8773.realization of the International Terrestrial Reference Frame of 2014
DF8773.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
DF8773.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
DF8773.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
DF8773.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
DF8773.currently published epoch of 2010.00.
DF8773
DF8773.Additional information on MYCS2 is available at
DF8773.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
DF8773
DF8773.** This station is in an area of suspected land subsidence, uplift, or
DF8773.** crustal motion. NGS recommends this and all published orthometric
DF8773.** heights in such areas be validated before use as vertical control.
DF8773.** Click here to see a list and map of nearby stations with valid
DF8773.** orthometric heights. Note: While datasheets are updated in real-time,
DF8773.** updates to archived datasheets and the SE TX Valid OH map occur
DF8773.** monthly. NGS discourages the use of scaled, VERTCON, or superseded
DF8773.** heights as vertical control as they are deemed unreliable.
DF8773.**
DF8773.** If an established orthometric height is unavailable in the survey control
DF8773.** section, it should be considered suspect. To view suspect heights,
DF8773.** (in the superseded section), select 'Include suspect heights in vertical
DF8773.** motion areas' box from the datasheet retrieval page.
DF8773
DF8773.Significant digits in the geoid height do not necessarily reflect accuracy.
DF8773.GEOID18 height accuracy estimate available here.
DF8773
DF8773.The PID for the CORS L1 Phase Center is DG4085.
DF8773
DF8773.Click photographs - Photos may exist for this station.
DF8773
DF8773.The XYZ, and position/ellipsoidal ht. are equivalent.
DF8773
DF8773.The ellipsoidal height was determined by GPS observations
DF8773.and is referenced to NAD 83.
DF8773
DF8773. The following values were computed from the NAD 83(2011) position.
DF8773
DF8773; North East Units Scale Factor Converg.
DF8773;SPC TXSC - 4,204,285.806 947,416.424 MT 0.99987632 +1 45 28.8
DF8773;SPC TXSC -13,793,561.02 3,108,315.38 sFT 0.99987632 +1 45 28.8
DF8773;UTM 15 - 3,280,054.364 266,510.223 MT 1.00027272 -1 11 34.0
DF8773
DF8773! - Elev Factor x Scale Factor = Combined Factor
DF8773!SPC TXSC - 1.00000159 x 0.99987632 = 0.99987791
DF8773!UTM 15 - 1.00000159 x 1.00027272 = 1.00027432
DF8773
DF8773_U.S. NATIONAL GRID SPATIAL ADDRESS: 15RTN6651080054(NAD 83)
DF8773
DF8773 SUPERSEDED SURVEY CONTROL
DF8773
DF8773 ELLIP H (06/27/12) -10.202 (m) GP(2010.00) 0 0
DF8773 NAD 83(2011)- 29 37 42.69336(N) 095 24 41.74689(W) AD(2010.00) c
DF8773 NAD 83(2011)- 29 37 42.69321(N) 095 24 41.74686(W) AD(2010.00) c
DF8773 ELLIP H (08/??/11) -10.193 (m) GP(2010.00) c c
DF8773 NAD 83(CORS)- 29 37 42.69303(N) 095 24 41.74693(W) AD(2002.00) c
DF8773 ELLIP H (01/??/06) -10.186 (m) GP(2002.00) c c
DF8773 NAD 83(CORS)- 29 37 42.69301(N) 095 24 41.74698(W) AD(2002.00) c
DF8773 ELLIP H (08/??/03) -10.151 (m) GP(2002.00) c c
DF8773
DF8773.Superseded values are not recommended for survey control.
DF8773
DF8773.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
DF8773.See file dsdata.pdf to determine how the superseded data were derived.
DF8773
DF8773_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
DF8773
DF8773 STATION DESCRIPTION
DF8773
DF8773'DESCRIBED BY NATIONAL GEODETIC SURVEY 2019
DF8773'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
DF8773'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
DF8773'ACCESSIBLE AT THE WORLDWIDE WEB.
DF8773'https://geodesy.noaa.gov/CORS/data.shtml
DF8773'https://geodesy.noaa.gov/CORS
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