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 03:46:32 EST
AF9595 ***********************************************************************
AF9595 CORS - This is a GPS Continuously Operating Reference Station.
AF9595 DESIGNATION - GALVESTON 2 CORS ARP
AF9595 CORS_ID - GAL2
AF9595 PID - AF9595
AF9595 STATE/COUNTY- TX/GALVESTON
AF9595 COUNTRY - US
AF9595 USGS QUAD - THE JETTIES (2019)
AF9595
AF9595 *CURRENT SURVEY CONTROL
AF9595 ______________________________________________________________________
AF9595* NAD 83(2011) POSITION- 29 19 48.23472(N) 094 44 12.02822(W) ADJUSTED
AF9595* NAD 83(2011) ELLIP HT- -16.137 (meters) (06/??/19) ADJUSTED
AF9595* NAD 83(2011) EPOCH - 2010.00
AF9595 **This station is in an area of suspected vertical motion (see below).
AF9595 ______________________________________________________________________
AF9595 GEOID HEIGHT - -26.616 (meters) GEOID18
AF9595 NAD 83(2011) X - -459,537.490 (meters) COMP
AF9595 NAD 83(2011) Y - -5,545,989.888 (meters) COMP
AF9595 NAD 83(2011) Z - 3,105,839.058 (meters) COMP
AF9595
AF9595 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
AF9595 Standards:
AF9595 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
AF9595 Horiz Ellip SD_N SD_E SD_h (unitless)
AF9595 -------------------------------------------------------------------
AF9595 NETWORK 0.41 0.98 0.14 0.19 0.50 -0.01196100
AF9595 -------------------------------------------------------------------
AF9595
AF9595.The coordinates were established by GPS observations
AF9595.and adjusted by the National Geodetic Survey in June 2019.
AF9595
AF9595.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
AF9595.been affixed to the stable North American Tectonic Plate.
AF9595
AF9595.The coordinates are valid at the epoch date displayed above
AF9595.which is a decimal equivalence of Year/Month/Day.
AF9595
AF9595.Due to the release of the International GNSS Service (IGS) 2014
AF9595.realization of the International Terrestrial Reference Frame of 2014
AF9595.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
AF9595.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
AF9595.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
AF9595.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
AF9595.currently published epoch of 2010.00.
AF9595
AF9595.Additional information on MYCS2 is available at
AF9595.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
AF9595
AF9595.** This station is in an area of suspected land subsidence, uplift, or
AF9595.** crustal motion. NGS recommends this and all published orthometric
AF9595.** heights in such areas be validated before use as vertical control.
AF9595.** Click here to see a list and map of nearby stations with valid
AF9595.** orthometric heights. Note: While datasheets are updated in real-time,
AF9595.** updates to archived datasheets and the SE TX Valid OH map occur
AF9595.** monthly. NGS discourages the use of scaled, VERTCON, or superseded
AF9595.** heights as vertical control as they are deemed unreliable.
AF9595.**
AF9595.** If an established orthometric height is unavailable in the survey control
AF9595.** section, it should be considered suspect. To view suspect heights,
AF9595.** (in the superseded section), select 'Include suspect heights in vertical
AF9595.** motion areas' box from the datasheet retrieval page.
AF9595
AF9595.Significant digits in the geoid height do not necessarily reflect accuracy.
AF9595.GEOID18 height accuracy estimate available here.
AF9595
AF9595.The PID for the CORS L1 Phase Center is AJ7916.
AF9595
AF9595.Click photographs - Photos may exist for this station.
AF9595
AF9595.The XYZ, and position/ellipsoidal ht. are equivalent.
AF9595
AF9595.The ellipsoidal height was determined by GPS observations
AF9595.and is referenced to NAD 83.
AF9595
AF9595. The following values were computed from the NAD 83(2011) position.
AF9595
AF9595; North East Units Scale Factor Converg.
AF9595;SPC TXSC - 4,173,423.072 1,013,938.872 MT 0.99986325 +2 05 19.2
AF9595;SPC TXSC -13,692,305.53 3,326,564.45 sFT 0.99986325 +2 05 19.2
AF9595;UTM 15 - 3,245,806.979 331,374.664 MT 0.99995087 -0 51 03.2
AF9595
AF9595! - Elev Factor x Scale Factor = Combined Factor
AF9595!SPC TXSC - 1.00000253 x 0.99986325 = 0.99986578
AF9595!UTM 15 - 1.00000253 x 0.99995087 = 0.99995340
AF9595
AF9595_U.S. NATIONAL GRID SPATIAL ADDRESS: 15RUN3137445806(NAD 83)
AF9595
AF9595 SUPERSEDED SURVEY CONTROL
AF9595
AF9595 NAD 83(2011)- 29 19 48.23473(N) 094 44 12.02893(W) AD(2010.00) c
AF9595 ELLIP H (08/??/11) -16.105 (m) GP(2010.00) c c
AF9595 NAD 83(CORS)- 29 19 48.23476(N) 094 44 12.02944(W) AD(2002.00) c
AF9595 ELLIP H (03/??/02) -16.112 (m) GP(2002.00) c c
AF9595 NAD 83(CORS)- 29 19 48.23487(N) 094 44 12.02957(W) AD(1997.00) c
AF9595 ELLIP H (11/??/01) -16.111 (m) GP(1997.00) c c
AF9595 NAD 83(CORS)- 29 19 48.23470(N) 094 44 12.02972(W) AD(1997.00) c
AF9595 ELLIP H (08/??/96) -16.061 (m) GP(1997.00) c c
AF9595 NAD 83(CORS)- 29 19 48.23470(N) 094 44 12.02972(W) AD(1996.00) c
AF9595 ELLIP H (08/??/96) -16.061 (m) GP(1996.00) c c
AF9595
AF9595.Superseded values are not recommended for survey control.
AF9595
AF9595.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
AF9595.See file dsdata.pdf to determine how the superseded data were derived.
AF9595
AF9595_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
AF9595
AF9595 STATION DESCRIPTION
AF9595
AF9595'DESCRIBED BY NATIONAL GEODETIC SURVEY 2019
AF9595'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
AF9595'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
AF9595'ACCESSIBLE AT THE WORLDWIDE WEB.
AF9595'https://geodesy.noaa.gov/CORS/data.shtml
AF9595'https://geodesy.noaa.gov/CORS
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