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 17, 2025 19:18:37 EST
AF9523 ***********************************************************************
AF9523 CORS - This is a GPS Continuously Operating Reference Station.
AF9523 DESIGNATION - NORTH LIBERTY CORS ARP
AF9523 CORS_ID - NLIB
AF9523 PID - AF9523
AF9523 STATE/COUNTY- IA/JOHNSON
AF9523 COUNTRY - US
AF9523 USGS QUAD - ELY (2018)
AF9523
AF9523 *CURRENT SURVEY CONTROL
AF9523 ______________________________________________________________________
AF9523* NAD 83(2011) POSITION- 41 46 17.70051(N) 091 34 29.59192(W) ADJUSTED
AF9523* NAD 83(2011) ELLIP HT- 208.654 (meters) (05/??/20) ADJUSTED
AF9523* NAD 83(2011) EPOCH - 2010.00
AF9523 ______________________________________________________________________
AF9523 GEOID HEIGHT - -32.558 (meters) GEOID18
AF9523 NAD 83(2011) X - -130,933.935 (meters) COMP
AF9523 NAD 83(2011) Y - -4,762,293.512 (meters) COMP
AF9523 NAD 83(2011) Z - 4,226,855.113 (meters) COMP
AF9523
AF9523 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
AF9523 Standards:
AF9523 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
AF9523 Horiz Ellip SD_N SD_E SD_h (unitless)
AF9523 -------------------------------------------------------------------
AF9523 NETWORK 0.03 0.10 0.01 0.01 0.05 -0.10219800
AF9523 -------------------------------------------------------------------
AF9523
AF9523.The coordinates were established by GPS observations
AF9523.and adjusted by the National Geodetic Survey in May 2020.
AF9523
AF9523.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
AF9523.been affixed to the stable North American Tectonic Plate.
AF9523
AF9523.The coordinates are valid at the epoch date displayed above
AF9523.which is a decimal equivalence of Year/Month/Day.
AF9523
AF9523.Due to the release of the International GNSS Service (IGS) 2014
AF9523.realization of the International Terrestrial Reference Frame of 2014
AF9523.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
AF9523.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
AF9523.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
AF9523.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
AF9523.currently published epoch of 2010.00.
AF9523
AF9523.Additional information on MYCS2 is available at
AF9523.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
AF9523
AF9523.Significant digits in the geoid height do not necessarily reflect accuracy.
AF9523.GEOID18 height accuracy estimate available here.
AF9523
AF9523.The PID for the CORS L1 Phase Center is DR4962.
AF9523
AF9523.Click photographs - Photos may exist for this station.
AF9523
AF9523.The XYZ, and position/ellipsoidal ht. are equivalent.
AF9523
AF9523.The ellipsoidal height was determined by GPS observations
AF9523.and is referenced to NAD 83.
AF9523
AF9523. The following values were computed from the NAD 83(2011) position.
AF9523
AF9523; North East Units Scale Factor Converg.
AF9523;SPC IA S - 198,509.175 660,052.837 MT 0.99999793 +1 16 05.1
AF9523;SPC IA S - 651,275.52 2,165,523.35 sFT 0.99999793 +1 16 05.1
AF9523;UTM 15 - 4,625,397.312 618,447.038 MT 0.99977264 +0 56 58.1
AF9523
AF9523! - Elev Factor x Scale Factor = Combined Factor
AF9523!SPC IA S - 0.99996727 x 0.99999793 = 0.99996520
AF9523!UTM 15 - 0.99996727 x 0.99977264 = 0.99973992
AF9523
AF9523_U.S. NATIONAL GRID SPATIAL ADDRESS: 15TXG1844725397(NAD 83)
AF9523
AF9523 SUPERSEDED SURVEY CONTROL
AF9523
AF9523 NAD 83(2011)- 41 46 17.70035(N) 091 34 29.59187(W) AD(2010.00) c
AF9523 ELLIP H (06/??/19) 208.678 (m) GP(2010.00) c c
AF9523 NAD 83(2011)- 41 46 17.70040(N) 091 34 29.59182(W) AD(2010.00) c
AF9523 ELLIP H (03/??/15) 208.678 (m) GP(2010.00) c c
AF9523 NAD 83(2011)- 41 46 17.70040(N) 091 34 29.59182(W) AD(2010.00) c
AF9523 ELLIP H (08/??/11) 208.126 (m) GP(2010.00) c c
AF9523 NAD 83(CORS)- 41 46 17.70040(N) 091 34 29.59248(W) AD(2002.00) c
AF9523 ELLIP H (03/??/02) 208.147 (m) GP(2002.00) c c
AF9523 NAD 83(CORS)- 41 46 17.70029(N) 091 34 29.59287(W) AD(1997.00) c
AF9523 ELLIP H (07/??/96) 208.149 (m) GP(1997.00) c c
AF9523 NAD 83(CORS)- 41 46 17.70033(N) 091 34 29.59291(W) AD(1996.00) c
AF9523 ELLIP H (07/??/96) 208.153 (m) GP(1996.00) c c
AF9523 NAD 83(CORS)- 41 46 17.70029(N) 091 34 29.59287(W) AD(1997.00) c
AF9523 ELLIP H (07/??/95) 208.149 (m) GP(1997.00) c c
AF9523
AF9523.Superseded values are not recommended for survey control.
AF9523
AF9523.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
AF9523.See file dsdata.pdf to determine how the superseded data were derived.
AF9523
AF9523_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
AF9523
AF9523 STATION DESCRIPTION
AF9523
AF9523'DESCRIBED BY NATIONAL GEODETIC SURVEY 2020
AF9523'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
AF9523'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
AF9523'ACCESSIBLE AT THE WORLDWIDE WEB.
AF9523'https://geodesy.noaa.gov/CORS/data.shtml
AF9523'https://geodesy.noaa.gov/CORS
1 National Geodetic Survey, Retrieval Date = FEBRUARY 17, 2025 19:18:37 EST
AF9524 ***********************************************************************
AF9524 HT_MOD - This is a Height Modernization Survey Station.
AF9524 CORS - This is a GPS Continuously Operating Reference Station.
AF9524 DESIGNATION - NORTH LIBERTY CORS MONUMENT
AF9524 CORS_ID - NLIB
AF9524 PID - AF9524
AF9524 STATE/COUNTY- IA/JOHNSON
AF9524 COUNTRY - US
AF9524 USGS QUAD - ELY (2018)
AF9524
AF9524 *CURRENT SURVEY CONTROL
AF9524 ______________________________________________________________________
AF9524* NAD 83(2011) POSITION- 41 46 17.70051(N) 091 34 29.59192(W) ADJUSTED
AF9524* NAD 83(2011) ELLIP HT- 208.041 (meters) (05/??/20) ADJUSTED
AF9524* NAD 83(2011) EPOCH - 2010.00
AF9524* NAVD 88 ORTHO HEIGHT - 240.60 (meters) 789.4 (feet) GPS OBS
AF9524 ______________________________________________________________________
AF9524 NAVD 88 orthometric height was determined with geoid model GEOID99
AF9524 GEOID HEIGHT - -32.439 (meters) GEOID99
AF9524 GEOID HEIGHT - -32.558 (meters) GEOID18
AF9524 NAD 83(2011) X - -130,933.922 (meters) COMP
AF9524 NAD 83(2011) Y - -4,762,293.055 (meters) COMP
AF9524 NAD 83(2011) Z - 4,226,854.705 (meters) COMP
AF9524 LAPLACE CORR - -0.97 (seconds) DEFLEC18
AF9524
AF9524 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
AF9524 Standards:
AF9524 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
AF9524 Horiz Ellip SD_N SD_E SD_h (unitless)
AF9524 -------------------------------------------------------------------
AF9524 NETWORK 0.03 0.10 0.01 0.01 0.05 -0.10219800
AF9524 -------------------------------------------------------------------
AF9524
AF9524.The horizontal coordinates were established by GPS observations
AF9524.and adjusted by the National Geodetic Survey in May 2020.
AF9524
AF9524.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
AF9524.been affixed to the stable North American Tectonic Plate.
AF9524
AF9524.The horizontal coordinates are valid at the epoch date displayed above
AF9524.which is a decimal equivalence of Year/Month/Day.
AF9524
AF9524.Due to the release of the International GNSS Service (IGS) 2014
AF9524.realization of the International Terrestrial Reference Frame of 2014
AF9524.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
AF9524.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
AF9524.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
AF9524.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
AF9524.currently published epoch of 2010.00.
AF9524
AF9524.Additional information on MYCS2 is available at
AF9524.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
AF9524
AF9524.The orthometric height was determined by GPS observations and a
AF9524.high-resolution geoid model using precise GPS observation and
AF9524.processing techniques.
AF9524
AF9524.Significant digits in the geoid height do not necessarily reflect accuracy.
AF9524.GEOID18 height accuracy estimate available here.
AF9524
AF9524.Click photographs - Photos may exist for this station.
AF9524
AF9524.The XYZ, and position/ellipsoidal ht. are equivalent.
AF9524
AF9524.The Laplace correction was computed from DEFLEC18 derived deflections.
AF9524
AF9524.The ellipsoidal height was determined by GPS observations
AF9524.and is referenced to NAD 83.
AF9524
AF9524. The following values were computed from the NAD 83(2011) position.
AF9524
AF9524; North East Units Scale Factor Converg.
AF9524;SPC IA S - 198,509.175 660,052.837 MT 0.99999793 +1 16 05.1
AF9524;SPC IA S - 651,275.52 2,165,523.35 sFT 0.99999793 +1 16 05.1
AF9524;UTM 15 - 4,625,397.312 618,447.038 MT 0.99977264 +0 56 58.1
AF9524
AF9524! - Elev Factor x Scale Factor = Combined Factor
AF9524!SPC IA S - 0.99996737 x 0.99999793 = 0.99996530
AF9524!UTM 15 - 0.99996737 x 0.99977264 = 0.99974002
AF9524
AF9524_U.S. NATIONAL GRID SPATIAL ADDRESS: 15TXG1844725397(NAD 83)
AF9524
AF9524 SUPERSEDED SURVEY CONTROL
AF9524
AF9524 NAD 83(2011)- 41 46 17.70035(N) 091 34 29.59187(W) AD(2010.00) A
AF9524 ELLIP H (06/??/19) 208.066 (m) GP(2010.00) 4 1
AF9524 NAD 83(2011)- 41 46 17.70040(N) 091 34 29.59182(W) AD(2010.00) A
AF9524 ELLIP H (03/??/15) 208.065 (m) GP(2010.00) 4 1
AF9524 NAD 83(2011)- 41 46 17.70040(N) 091 34 29.59182(W) AD(2010.00) A
AF9524 ELLIP H (08/??/11) 207.513 (m) GP(2010.00) 4 1
AF9524 ELLIP H (02/10/07) 208.086 (m) GP(2002.00)
AF9524 NAD 83(2007)- 41 46 17.70040(N) 091 34 29.59248(W) AD(2002.00) 0
AF9524 NAD 83(CORS)- 41 46 17.70040(N) 091 34 29.59248(W) AD(2002.00) A
AF9524 ELLIP H (03/??/02) 207.534 (m) GP(2002.00) 4 1
AF9524 NAD 83(CORS)- 41 46 17.70029(N) 091 34 29.59287(W) AD(1997.00) A
AF9524 ELLIP H (07/??/96) 207.537 (m) GP(1997.00) 4 1
AF9524 NAD 83(CORS)- 41 46 17.70033(N) 091 34 29.59291(W) AD(1996.00) A
AF9524 ELLIP H (07/??/96) 207.540 (m) GP(1996.00) 4 1
AF9524 NAD 83(CORS)- 41 46 17.70029(N) 091 34 29.59287(W) AD(1997.00) A
AF9524 ELLIP H (07/??/95) 207.537 (m) GP(1997.00) 4 1
AF9524 NAVD 88 (08/20/99) 240.5 (m) UNKNOWN model used GPS OBS
AF9524
AF9524.Superseded values are not recommended for survey control.
AF9524
AF9524.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
AF9524.See file dsdata.pdf to determine how the superseded data were derived.
AF9524
AF9524_STAMPING: 4007-S NORTH LIBERTY
AF9524
AF9524 HISTORY - Date Condition Report By
AF9524 HISTORY - UNK MONUMENTED NASA
AF9524
AF9524 STATION DESCRIPTION
AF9524
AF9524'THIS MONUMENT IS ASSOCIATED WITH CORS SITE 'NLIB'
AF9524'LATEST INFORMATION INCLUDING POSITIONS AND VELOCITIES
AF9524'ARE AVAILABLE IN THE COORDINATE AND LOG FILES ACCESSIBLE
AF9524'BY ANONYMOUS FTP OR THE WORLDWIDE WEB.
AF9524' https://geodesy.noaa.gov/corsdata/coord/coord_14
AF9524' https://geodesy.noaa.gov/corsdata/station_log
AF9524' https://geodesy.noaa.gov/CORS
AF9524'RECOVERED AS DESCRIBED.
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