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 17:04:42 EST
DH5831 ***********************************************************************
DH5831 CORS - This is a GPS Continuously Operating Reference Station.
DH5831 DESIGNATION - GROTON CORS ARP
DH5831 CORS_ID - CTGR
DH5831 PID - DH5831
DH5831 STATE/COUNTY- CT/NEW LONDON
DH5831 COUNTRY - US
DH5831 USGS QUAD - NEW LONDON (2018)
DH5831
DH5831 *CURRENT SURVEY CONTROL
DH5831 ______________________________________________________________________
DH5831* NAD 83(2011) POSITION- 41 20 07.03560(N) 072 02 58.96923(W) ADJUSTED
DH5831* NAD 83(2011) ELLIP HT- -18.342 (meters) (06/??/19) ADJUSTED
DH5831* NAD 83(2011) EPOCH - 2010.00
DH5831 ______________________________________________________________________
DH5831 GEOID HEIGHT - -30.648 (meters) GEOID18
DH5831 NAD 83(2011) X - 1,478,107.651 (meters) COMP
DH5831 NAD 83(2011) Y - -4,562,614.122 (meters) COMP
DH5831 NAD 83(2011) Z - 4,190,441.883 (meters) COMP
DH5831
DH5831 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
DH5831 Standards:
DH5831 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
DH5831 Horiz Ellip SD_N SD_E SD_h (unitless)
DH5831 -------------------------------------------------------------------
DH5831 NETWORK 0.11 0.30 0.04 0.05 0.15 -0.12704700
DH5831 -------------------------------------------------------------------
DH5831
DH5831.The coordinates were established by GPS observations
DH5831.and adjusted by the National Geodetic Survey in June 2019.
DH5831
DH5831.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
DH5831.been affixed to the stable North American Tectonic Plate.
DH5831
DH5831.The coordinates are valid at the epoch date displayed above
DH5831.which is a decimal equivalence of Year/Month/Day.
DH5831
DH5831.Due to the release of the International GNSS Service (IGS) 2014
DH5831.realization of the International Terrestrial Reference Frame of 2014
DH5831.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
DH5831.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
DH5831.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
DH5831.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
DH5831.currently published epoch of 2010.00.
DH5831
DH5831.Additional information on MYCS2 is available at
DH5831.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
DH5831
DH5831.Significant digits in the geoid height do not necessarily reflect accuracy.
DH5831.GEOID18 height accuracy estimate available here.
DH5831
DH5831.The PID for the CORS L1 Phase Center is DO8497.
DH5831
DH5831.Click photographs - Photos may exist for this station.
DH5831
DH5831.The XYZ, and position/ellipsoidal ht. are equivalent.
DH5831
DH5831.The ellipsoidal height was determined by GPS observations
DH5831.and is referenced to NAD 83.
DH5831
DH5831. The following values were computed from the NAD 83(2011) position.
DH5831
DH5831; North East Units Scale Factor Converg.
DH5831;SPC CT - 208,383.578 363,418.466 MT 0.99998910 +0 27 51.6
DH5831;SPC CT - 683,671.79 1,192,315.42 sFT 0.99998910 +0 27 51.6
DH5831;UTM 18 - 4,580,178.224 746,876.080 MT 1.00035014 +1 56 58.3
DH5831;UTM 19 - 4,580,466.242 244,802.973 MT 1.00040157 -2 00 55.1
DH5831
DH5831! - Elev Factor x Scale Factor = Combined Factor
DH5831!SPC CT - 1.00000288 x 0.99998910 = 0.99999198
DH5831!UTM 18 - 1.00000288 x 1.00035014 = 1.00035302
DH5831!UTM 19 - 1.00000288 x 1.00040157 = 1.00040445
DH5831
DH5831_U.S. NATIONAL GRID SPATIAL ADDRESS: 18TYL4687680178(NAD 83)
DH5831
DH5831 SUPERSEDED SURVEY CONTROL
DH5831
DH5831 ELLIP H (06/27/12) -18.325 (m) GP(2010.00) 0 0
DH5831 NAD 83(2011)- 41 20 07.03565(N) 072 02 58.96956(W) AD(2010.00) c
DH5831 NAD 83(2011)- 41 20 07.03552(N) 072 02 58.96932(W) AD(2010.00) c
DH5831 ELLIP H (08/??/11) -18.342 (m) GP(2010.00) c c
DH5831 ELLIP H (02/10/07) -18.306 (m) GP(2002.00)
DH5831 NAD 83(2007)- 41 20 07.03601(N) 072 02 58.97025(W) AD(2002.00) c
DH5831 NAD 83(CORS)- 41 20 07.03566(N) 072 02 58.96958(W) AD(2002.00) c
DH5831 ELLIP H (09/??/05) -18.346 (m) GP(2002.00) c c
DH5831 ELLIP H (05/31/05) -18.321 (m) GP( ) 3 1
DH5831 NAD 83(1996)- 41 20 07.03602(N) 072 02 58.97044(W) AD( ) c
DH5831
DH5831.Superseded values are not recommended for survey control.
DH5831
DH5831.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
DH5831.See file dsdata.pdf to determine how the superseded data were derived.
DH5831
DH5831_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
DH5831
DH5831 STATION DESCRIPTION
DH5831
DH5831'DESCRIBED BY NATIONAL GEODETIC SURVEY 2019
DH5831'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
DH5831'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
DH5831'ACCESSIBLE AT THE WORLDWIDE WEB.
DH5831'https://geodesy.noaa.gov/CORS/data.shtml
DH5831'https://geodesy.noaa.gov/CORS
1 National Geodetic Survey, Retrieval Date = FEBRUARY 19, 2025 17:04:42 EST
DO8498 ***********************************************************************
DO8498 CORS - This is a GPS Continuously Operating Reference Station.
DO8498 DESIGNATION - CTGR CORS MON
DO8498 CORS_ID - CTGR
DO8498 PID - DO8498
DO8498 STATE/COUNTY- CT/NEW LONDON
DO8498 COUNTRY - US
DO8498 USGS QUAD - NEW LONDON (2018)
DO8498
DO8498 *CURRENT SURVEY CONTROL
DO8498 ______________________________________________________________________
DO8498* NAD 83(2011) POSITION- 41 20 07.03560(N) 072 02 58.96923(W) ADJUSTED
DO8498* NAD 83(2011) ELLIP HT- -18.343 (meters) (06/??/19) ADJUSTED
DO8498* NAD 83(2011) EPOCH - 2010.00
DO8498 ______________________________________________________________________
DO8498 GEOID HEIGHT - -30.648 (meters) GEOID18
DO8498 NAD 83(2011) X - 1,478,107.651 (meters) COMP
DO8498 NAD 83(2011) Y - -4,562,614.122 (meters) COMP
DO8498 NAD 83(2011) Z - 4,190,441.883 (meters) COMP
DO8498 LAPLACE CORR - -1.09 (seconds) DEFLEC18
DO8498
DO8498 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
DO8498 Standards:
DO8498 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
DO8498 Horiz Ellip SD_N SD_E SD_h (unitless)
DO8498 -------------------------------------------------------------------
DO8498 NETWORK 0.11 0.30 0.04 0.05 0.15 -0.12704700
DO8498 -------------------------------------------------------------------
DO8498
DO8498.The horizontal coordinates were established by GPS observations
DO8498.and adjusted by the National Geodetic Survey in June 2019.
DO8498
DO8498.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
DO8498.been affixed to the stable North American Tectonic Plate.
DO8498
DO8498.The horizontal coordinates are valid at the epoch date displayed above
DO8498.which is a decimal equivalence of Year/Month/Day.
DO8498
DO8498.Due to the release of the International GNSS Service (IGS) 2014
DO8498.realization of the International Terrestrial Reference Frame of 2014
DO8498.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
DO8498.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
DO8498.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
DO8498.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
DO8498.currently published epoch of 2010.00.
DO8498
DO8498.Additional information on MYCS2 is available at
DO8498.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
DO8498
DO8498.Significant digits in the geoid height do not necessarily reflect accuracy.
DO8498.GEOID18 height accuracy estimate available here.
DO8498
DO8498.Click photographs - Photos may exist for this station.
DO8498
DO8498.The XYZ, and position/ellipsoidal ht. are equivalent.
DO8498
DO8498.The Laplace correction was computed from DEFLEC18 derived deflections.
DO8498
DO8498.The ellipsoidal height was determined by GPS observations
DO8498.and is referenced to NAD 83.
DO8498
DO8498. The following values were computed from the NAD 83(2011) position.
DO8498
DO8498; North East Units Scale Factor Converg.
DO8498;SPC CT - 208,383.578 363,418.466 MT 0.99998910 +0 27 51.6
DO8498;SPC CT - 683,671.79 1,192,315.42 sFT 0.99998910 +0 27 51.6
DO8498;UTM 18 - 4,580,178.224 746,876.080 MT 1.00035014 +1 56 58.3
DO8498;UTM 19 - 4,580,466.242 244,802.973 MT 1.00040157 -2 00 55.1
DO8498
DO8498! - Elev Factor x Scale Factor = Combined Factor
DO8498!SPC CT - 1.00000288 x 0.99998910 = 0.99999198
DO8498!UTM 18 - 1.00000288 x 1.00035014 = 1.00035302
DO8498!UTM 19 - 1.00000288 x 1.00040157 = 1.00040445
DO8498
DO8498_U.S. NATIONAL GRID SPATIAL ADDRESS: 18TYL4687680178(NAD 83)
DO8498
DO8498 SUPERSEDED SURVEY CONTROL
DO8498
DO8498 NAD 83(2011)- 41 20 07.03552(N) 072 02 58.96932(W) AD(2010.00) A
DO8498 ELLIP H (08/??/11) -18.343 (m) GP(2010.00) 4 1
DO8498 NAD 83(CORS)- 41 20 07.03566(N) 072 02 58.96958(W) AD(2002.00) A
DO8498 ELLIP H (09/??/05) -18.347 (m) GP(2002.00) 4 1
DO8498
DO8498.Superseded values are not recommended for survey control.
DO8498
DO8498.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
DO8498.See file dsdata.pdf to determine how the superseded data were derived.
DO8498
DO8498_STAMPING: UNKNOWN
DO8498
DO8498 STATION DESCRIPTION
DO8498
DO8498'THIS MONUMENT IS ASSOCIATED WITH CORS SITE 'CTGR'
DO8498'LATEST INFORMATION INCLUDING POSITIONS AND VELOCITIES
DO8498'ARE AVAILABLE IN THE COORDINATE AND LOG FILES ACCESSIBLE
DO8498'BY ANONYMOUS FTP OR THE WORLDWIDE WEB.
DO8498' https://geodesy.noaa.gov/corsdata/coord/coord_14
DO8498' https://geodesy.noaa.gov/corsdata/station_log
DO8498' https://geodesy.noaa.gov/CORS
DO8498'RECOVERED AS DESCRIBED.
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