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 06:01:04 EST
DF4062 ***********************************************************************
DF4062 HT_MOD - This is a Height Modernization Survey Station.
DF4062 CORS - This is a GPS Continuously Operating Reference Station.
DF4062 DESIGNATION - HOUSTON WAAS 1 CORS ARP
DF4062 CORS_ID - ZHU1
DF4062 PID - DF4062
DF4062 STATE/COUNTY- TX/HARRIS
DF4062 COUNTRY - US
DF4062 USGS QUAD - HUMBLE (2019)
DF4062
DF4062 *CURRENT SURVEY CONTROL
DF4062 ______________________________________________________________________
DF4062* NAD 83(2011) POSITION- 29 57 42.80944(N) 095 19 53.10096(W) ADJUSTED
DF4062* NAD 83(2011) ELLIP HT- 11.736 (meters) (06/??/19) ADJUSTED
DF4062* NAD 83(2011) EPOCH - 2010.00
DF4062* NAVD 88 ORTHO HEIGHT - 39.10 (meters) 128.3 (feet) GPS OBS
DF4062 **This station is in an area of suspected vertical motion (see below).
DF4062 ______________________________________________________________________
DF4062 GEOID HEIGHT - -27.429 (meters) GEOID18
DF4062 NAD 83(2011) X - -513,863.670 (meters) COMP
DF4062 NAD 83(2011) Y - -5,506,452.821 (meters) COMP
DF4062 NAD 83(2011) Z - 3,166,720.451 (meters) COMP
DF4062
DF4062 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
DF4062 Standards:
DF4062 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
DF4062 Horiz Ellip SD_N SD_E SD_h (unitless)
DF4062 -------------------------------------------------------------------
DF4062 NETWORK 0.19 0.46 0.06 0.09 0.24 0.12932400
DF4062 -------------------------------------------------------------------
DF4062
DF4062.The coordinates were established by GPS observations
DF4062.and adjusted by the National Geodetic Survey in June 2019.
DF4062
DF4062.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
DF4062.been affixed to the stable North American Tectonic Plate.
DF4062
DF4062.The coordinates are valid at the epoch date displayed above
DF4062.which is a decimal equivalence of Year/Month/Day.
DF4062
DF4062.Due to the release of the International GNSS Service (IGS) 2014
DF4062.realization of the International Terrestrial Reference Frame of 2014
DF4062.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
DF4062.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
DF4062.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
DF4062.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
DF4062.currently published epoch of 2010.00.
DF4062
DF4062.Additional information on MYCS2 is available at
DF4062.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
DF4062
DF4062.** This station is in an area of suspected land subsidence, uplift, or
DF4062.** crustal motion. NGS recommends this and all published orthometric
DF4062.** heights in such areas be validated before use as vertical control.
DF4062.** Click here to see a list and map of nearby stations with valid
DF4062.** orthometric heights. Note: While datasheets are updated in real-time,
DF4062.** updates to archived datasheets and the SE TX Valid OH map occur
DF4062.** monthly. NGS discourages the use of scaled, VERTCON, or superseded
DF4062.** heights as vertical control as they are deemed unreliable.
DF4062.**
DF4062.** If an established orthometric height is unavailable in the survey control
DF4062.** section, it should be considered suspect. To view suspect heights,
DF4062.** (in the superseded section), select 'Include suspect heights in vertical
DF4062.** motion areas' box from the datasheet retrieval page.
DF4062
DF4062.The orthometric height was determined by GPS observations and a
DF4062.high-resolution geoid model using precise GPS observation and
DF4062.processing techniques.
DF4062
DF4062.Significant digits in the geoid height do not necessarily reflect accuracy.
DF4062.GEOID18 height accuracy estimate available here.
DF4062
DF4062.The PID for the CORS L1 Phase Center is DJ2631.
DF4062
DF4062.Click photographs - Photos may exist for this station.
DF4062
DF4062.The XYZ, and position/ellipsoidal ht. are equivalent.
DF4062
DF4062.The ellipsoidal height was determined by GPS observations
DF4062.and is referenced to NAD 83.
DF4062
DF4062. The following values were computed from the NAD 83(2011) position.
DF4062
DF4062; North East Units Scale Factor Converg.
DF4062;SPC TXSC - 4,241,457.893 954,017.748 MT 0.99992295 +1 47 50.2
DF4062;SPC TXSC -13,915,516.44 3,129,973.23 sFT 0.99992295 +1 47 50.2
DF4062;UTM 15 - 3,316,849.425 275,023.026 MT 1.00022451 -1 09 53.5
DF4062
DF4062! - Elev Factor x Scale Factor = Combined Factor
DF4062!SPC TXSC - 0.99999816 x 0.99992295 = 0.99992111
DF4062!UTM 15 - 0.99999816 x 1.00022451 = 1.00022267
DF4062
DF4062_U.S. NATIONAL GRID SPATIAL ADDRESS: 15RTP7502316849(NAD 83)
DF4062
DF4062 SUPERSEDED SURVEY CONTROL
DF4062
DF4062 ELLIP H (06/27/12) 11.735 (m) GP(2010.00) 0 0
DF4062 NAD 83(2011)- 29 57 42.80954(N) 095 19 53.10114(W) AD(2010.00) c
DF4062 NAD 83(2011)- 29 57 42.80935(N) 095 19 53.10101(W) AD(2010.00) c
DF4062 ELLIP H (08/??/11) 11.743 (m) GP(2010.00) c c
DF4062 NAD 83(CORS)- 29 57 42.80882(N) 095 19 53.10146(W) AD(2002.00) c
DF4062 ELLIP H (09/??/07) 11.789 (m) GP(2002.00) c c
DF4062 NAD 83(CORS)- 29 57 42.80876(N) 095 19 53.10144(W) AD(2002.00) c
DF4062 NAD 83(CORS)- 29 57 42.80876(N) 095 19 53.10144(W) AD(2002.00) c
DF4062 ELLIP H (02/??/03) 11.789 (m) GP(2002.00) c c
DF4062 ELLIP H (02/??/03) 11.789 (m) GP(2002.00) c c
DF4062 NAVD 88 (06/07/10) 39.11 (m) GEOID09 model used GPS OBS
DF4062
DF4062.Superseded values are not recommended for survey control.
DF4062
DF4062.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
DF4062.See file dsdata.pdf to determine how the superseded data were derived.
DF4062
DF4062_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
DF4062
DF4062 STATION DESCRIPTION
DF4062
DF4062'DESCRIBED BY NATIONAL GEODETIC SURVEY 2019
DF4062'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
DF4062'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
DF4062'ACCESSIBLE AT THE WORLDWIDE WEB.
DF4062'https://geodesy.noaa.gov/CORS/data.shtml
DF4062'https://geodesy.noaa.gov/CORS
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