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 03:29:01 EST
DR6828 ***********************************************************************
DR6828 CORS - This is a GPS Continuously Operating Reference Station.
DR6828 DESIGNATION - N301 GALVESTON 21 CORS ARP
DR6828 CORS_ID - N301
DR6828 PID - DR6828
DR6828 STATE/COUNTY- TX/GALVESTON
DR6828 COUNTRY - US
DR6828 USGS QUAD - GALVESTON (2019)
DR6828
DR6828 *CURRENT SURVEY CONTROL
DR6828 ______________________________________________________________________
DR6828* NAD 83(2011) POSITION- 29 18 37.92456(N) 094 47 30.19525(W) ADJUSTED
DR6828* NAD 83(2011) ELLIP HT- -17.492 (meters) (05/??/21) ADJUSTED
DR6828* NAD 83(2011) EPOCH - 2010.00
DR6828 **This station is in an area of suspected vertical motion (see below).
DR6828 ______________________________________________________________________
DR6828 GEOID HEIGHT - -26.639 (meters) GEOID18
DR6828 NAD 83(2011) X - -464,953.990 (meters) COMP
DR6828 NAD 83(2011) Y - -5,546,601.028 (meters) COMP
DR6828 NAD 83(2011) Z - 3,103,950.926 (meters) COMP
DR6828
DR6828.Formal positional accuracy estimates are not available for this CORS
DR6828.because its coordinates were determined in part using modeled
DR6828.velocities. Approximate one-sigma accuracies for latitude, longitude,
DR6828.and ellipsoid height can be obtained from the short-term time series.
DR6828.Additional information regarding modeled velocities is available on
DR6828.the CORS Coordinates for MYCS2 web page:
DR6828.https://www.ngs.noaa.gov/CORS/news/mycs2/mycs2.shtml.
DR6828
DR6828.The coordinates were established by GPS observations
DR6828.and adjusted by the National Geodetic Survey in May 2021.
DR6828
DR6828.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
DR6828.been affixed to the stable North American Tectonic Plate.
DR6828
DR6828.The coordinates are valid at the epoch date displayed above
DR6828.which is a decimal equivalence of Year/Month/Day.
DR6828
DR6828.Due to the release of the International GNSS Service (IGS) 2014
DR6828.realization of the International Terrestrial Reference Frame of 2014
DR6828.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
DR6828.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
DR6828.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
DR6828.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
DR6828.currently published epoch of 2010.00.
DR6828
DR6828.Additional information on MYCS2 is available at
DR6828.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
DR6828
DR6828.** This station is in an area of suspected land subsidence, uplift, or
DR6828.** crustal motion. NGS recommends this and all published orthometric
DR6828.** heights in such areas be validated before use as vertical control.
DR6828.** Click here to see a list and map of nearby stations with valid
DR6828.** orthometric heights. Note: While datasheets are updated in real-time,
DR6828.** updates to archived datasheets and the SE TX Valid OH map occur
DR6828.** monthly. NGS discourages the use of scaled, VERTCON, or superseded
DR6828.** heights as vertical control as they are deemed unreliable.
DR6828.**
DR6828.** If an established orthometric height is unavailable in the survey control
DR6828.** section, it should be considered suspect. To view suspect heights,
DR6828.** (in the superseded section), select 'Include suspect heights in vertical
DR6828.** motion areas' box from the datasheet retrieval page.
DR6828
DR6828.Significant digits in the geoid height do not necessarily reflect accuracy.
DR6828.GEOID18 height accuracy estimate available here.
DR6828
DR6828.The PID for the CORS L1 Phase Center is DR6829.
DR6828
DR6828.Click photographs - Photos may exist for this station.
DR6828
DR6828.The XYZ, and position/ellipsoidal ht. are equivalent.
DR6828
DR6828.The ellipsoidal height was determined by GPS observations
DR6828.and is referenced to NAD 83.
DR6828
DR6828. The following values were computed from the NAD 83(2011) position.
DR6828
DR6828; North East Units Scale Factor Converg.
DR6828;SPC TXSC - 4,171,066.402 1,008,674.446 MT 0.99986333 +2 03 42.1
DR6828;SPC TXSC -13,684,573.69 3,309,292.74 sFT 0.99986333 +2 03 42.1
DR6828;UTM 15 - 3,243,723.152 325,995.786 MT 0.99997362 -0 52 38.4
DR6828
DR6828! - Elev Factor x Scale Factor = Combined Factor
DR6828!SPC TXSC - 1.00000275 x 0.99986333 = 0.99986608
DR6828!UTM 15 - 1.00000275 x 0.99997362 = 0.99997637
DR6828
DR6828_U.S. NATIONAL GRID SPATIAL ADDRESS: 15RUN2599543723(NAD 83)
DR6828
DR6828 SUPERSEDED SURVEY CONTROL
DR6828
DR6828.No superseded survey control is available for this station.
DR6828
DR6828_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
DR6828
DR6828 STATION DESCRIPTION
DR6828
DR6828'DESCRIBED BY NATIONAL GEODETIC SURVEY 2021
DR6828'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
DR6828'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
DR6828'ACCESSIBLE AT THE WORLDWIDE WEB.
DR6828'https://geodesy.noaa.gov/CORS/data.shtml
DR6828'https://geodesy.noaa.gov/CORS
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