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 12:43:00 EST
DP1223 ***********************************************************************
DP1223 CORS - This is a GPS Continuously Operating Reference Station.
DP1223 DESIGNATION - IOWA DOT ALLISON CORS ARP
DP1223 CORS_ID - IAAL
DP1223 PID - DP1223
DP1223 STATE/COUNTY- IA/BUTLER
DP1223 COUNTRY - US
DP1223 USGS QUAD - BUTLER CENTER (2018)
DP1223
DP1223 *CURRENT SURVEY CONTROL
DP1223 ______________________________________________________________________
DP1223* NAD 83(2011) POSITION- 42 44 49.37862(N) 092 47 14.20402(W) ADJUSTED
DP1223* NAD 83(2011) ELLIP HT- 292.123 (meters) (07/??/20) ADJUSTED
DP1223* NAD 83(2011) EPOCH - 2010.00
DP1223 ______________________________________________________________________
DP1223 GEOID HEIGHT - -31.701 (meters) GEOID18
DP1223 NAD 83(2011) X - -228,127.933 (meters) COMP
DP1223 NAD 83(2011) Y - -4,685,736.797 (meters) COMP
DP1223 NAD 83(2011) Z - 4,307,106.527 (meters) COMP
DP1223
DP1223 Network accuracy estimates per FGDC Geospatial Positioning Accuracy
DP1223 Standards:
DP1223 FGDC (95% conf, cm) Standard deviation (cm) CorrNE
DP1223 Horiz Ellip SD_N SD_E SD_h (unitless)
DP1223 -------------------------------------------------------------------
DP1223 NETWORK 0.13 0.43 0.06 0.05 0.22 -0.21204900
DP1223 -------------------------------------------------------------------
DP1223
DP1223.The coordinates were established by GPS observations
DP1223.and adjusted by the National Geodetic Survey in July 2020.
DP1223
DP1223.NAD 83(2011) refers to NAD 83 coordinates where the reference frame has
DP1223.been affixed to the stable North American Tectonic Plate.
DP1223
DP1223.The coordinates are valid at the epoch date displayed above
DP1223.which is a decimal equivalence of Year/Month/Day.
DP1223
DP1223.Due to the release of the International GNSS Service (IGS) 2014
DP1223.realization of the International Terrestrial Reference Frame of 2014
DP1223.(ITRF2014), NGS reprocessed all NOAA CORS Network and some IGS stations
DP1223.using data collected between 1/1/1996 and 1/30/2017. The resulting ITRF2014
DP1223.epoch 2010.00 coordinates, referred to as Multi-Year CORS Solution 2
DP1223.(MYCS2), were transformed to NAD 83 (2011/PA11/MA11) maintaining the
DP1223.currently published epoch of 2010.00.
DP1223
DP1223.Additional information on MYCS2 is available at
DP1223.https://geodesy.noaa.gov/CORS/news/mycs2/mycs2.shtml
DP1223
DP1223.Significant digits in the geoid height do not necessarily reflect accuracy.
DP1223.GEOID18 height accuracy estimate available here.
DP1223
DP1223.The PID for the CORS L1 Phase Center is DP1224.
DP1223
DP1223.Click photographs - Photos may exist for this station.
DP1223
DP1223.The XYZ, and position/ellipsoidal ht. are equivalent.
DP1223
DP1223.The ellipsoidal height was determined by GPS observations
DP1223.and is referenced to NAD 83.
DP1223
DP1223. The following values were computed from the NAD 83(2011) position.
DP1223
DP1223; North East Units Scale Factor Converg.
DP1223;SPC IA N - 1,138,764.198 1,558,349.972 MT 0.99994633 +0 28 59.0
DP1223;SPC IA N - 3,736,095.54 5,112,686.53 sFT 0.99994633 +0 28 59.0
DP1223;UTM 15 - 4,732,747.645 517,409.504 MT 0.99960373 +0 08 39.8
DP1223
DP1223! - Elev Factor x Scale Factor = Combined Factor
DP1223!SPC IA N - 0.99995419 x 0.99994633 = 0.99990052
DP1223!UTM 15 - 0.99995419 x 0.99960373 = 0.99955794
DP1223
DP1223_U.S. NATIONAL GRID SPATIAL ADDRESS: 15TWH1740932747(NAD 83)
DP1223
DP1223 SUPERSEDED SURVEY CONTROL
DP1223
DP1223 NAD 83(2011)- 42 44 49.37860(N) 092 47 14.20401(W) AD(2010.00) c
DP1223 ELLIP H (06/??/19) 292.130 (m) GP(2010.00) c c
DP1223 NAD 83(2011)- 42 44 49.37888(N) 092 47 14.20394(W) AD(2010.00) c
DP1223 ELLIP H (01/??/14) 292.107 (m) GP(2010.00) c c
DP1223
DP1223.Superseded values are not recommended for survey control.
DP1223
DP1223.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
DP1223.See file dsdata.pdf to determine how the superseded data were derived.
DP1223
DP1223_MARKER: STATION IS THE ANTENNA REFERENCE POINT OF THE GPS ANTENNA
DP1223
DP1223 STATION DESCRIPTION
DP1223
DP1223'DESCRIBED BY NATIONAL GEODETIC SURVEY 2020
DP1223'STATION IS PART OF THE NOAA CORS NETWORK. LATEST INFORMATION INCLUDING
DP1223'POSITIONS AND VELOCITIES ARE AVAILABLE IN THE COORDINATE AND LOG FILES
DP1223'ACCESSIBLE AT THE WORLDWIDE WEB.
DP1223'https://geodesy.noaa.gov/CORS/data.shtml
DP1223'https://geodesy.noaa.gov/CORS
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