The NGS Data Sheet
DATABASE = ,PROGRAM = datasheet, VERSION = 7.67
1 National Geodetic Survey, Retrieval Date = MAY 11, 2009
AH7372 ***********************************************************************
AH7372 DESIGNATION - 868 H 90002
AH7372 PID - AH7372
AH7372 STATE/COUNTY- DC/DISTRICT OF COLUMBIA
AH7372 USGS QUAD - WASHINGTON WEST (1983)
AH7372
AH7372 *CURRENT SURVEY CONTROL
AH7372 ___________________________________________________________________
AH7372* NAD 83(2007)- 38 53 34.08270(N) 077 02 11.58395(W) ADJUSTED
AH7372* NAVD 88 - 3.144 (meters) 10.31 (feet) ADJUSTED
AH7372 ___________________________________________________________________
AH7372 EPOCH DATE - 2002.00
AH7372 X - 1,115,093.441 (meters) COMP
AH7372 Y - -4,844,096.951 (meters) COMP
AH7372 Z - 3,983,043.318 (meters) COMP
AH7372 LAPLACE CORR- -2.52 (seconds) DEFLEC99
AH7372 ELLIP HEIGHT- -28.906 (meters) (02/10/07) ADJUSTED
AH7372 GEOID HEIGHT- -32.05 (meters) GEOID03
AH7372 DYNAMIC HT - 3.143 (meters) 10.31 (feet) COMP
AH7372
AH7372 ------- Accuracy Estimates (at 95% Confidence Level in cm) --------
AH7372 Type PID Designation North East Ellip
AH7372 -------------------------------------------------------------------
AH7372 NETWORK AH7372 868 H 90002 1.25 0.90 1.16
AH7372 -------------------------------------------------------------------
AH7372 MODELED GRAV- 980,097.6 (mgal) NAVD 88
AH7372
AH7372 VERT ORDER - FIRST CLASS II
AH7372
AH7372.The horizontal coordinates were established by GPS observations
AH7372.and adjusted by the National Geodetic Survey in February 2007.
AH7372
AH7372.The datum tag of NAD 83(2007) is equivalent to NAD 83(NSRS2007).
AH7372.See www.ngs.noaa.gov/NationalReadjustment for more information.
AH7372.The horizontal coordinates are valid at the epoch date displayed above.
AH7372.The epoch date for horizontal control is a decimal equivalence
AH7372.of Year/Month/Day.
AH7372
AH7372.The orthometric height was determined by differential leveling
AH7372.and adjusted in May 1999.
AH7372
AH7372.Photographs are available for this station.
AH7372
AH7372.The X, Y, and Z were computed from the position and the ellipsoidal ht.
AH7372
AH7372.The Laplace correction was computed from DEFLEC99 derived deflections.
AH7372
AH7372.The ellipsoidal height was determined by GPS observations
AH7372.and is referenced to NAD 83.
AH7372
AH7372.The geoid height was determined by GEOID03.
AH7372
AH7372.The dynamic height is computed by dividing the NAVD 88
AH7372.geopotential number by the normal gravity value computed on the
AH7372.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
AH7372.degrees latitude (g = 980.6199 gals.).
AH7372
AH7372.The modeled gravity was interpolated from observed gravity values.
AH7372
AH7372; North East Units Scale Factor Converg.
AH7372;UTM 18 - 4,306,851.994 323,377.724 MT 0.99998415 -1 16 44.4
AH7372
AH7372! - Elev Factor x Scale Factor = Combined Factor
AH7372!UTM 18 - 1.00000454 x 0.99998415 = 0.99998869
AH7372
AH7372|---------------------------------------------------------------------|
AH7372| PID Reference Object Distance Geod. Az |
AH7372| dddmmss.s |
AH7372| HV4442 WASHINGTON MONUMENT 1913 387.121 METERS 16255 |
AH7372|---------------------------------------------------------------------|
AH7372
AH7372 SUPERSEDED SURVEY CONTROL
AH7372
AH7372 NAD 83(1993)- 38 53 34.08274(N) 077 02 11.58362(W) AD( ) A
AH7372 ELLIP H (09/11/02) -28.896 (m) GP( ) 4 2
AH7372 NAVD 88 (09/11/02) 3.14 (m) 10.3 (f) LEVELING 3
AH7372
AH7372.Superseded values are not recommended for survey control.
AH7372.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
AH7372.See file dsdata.txt to determine how the superseded data were derived.
AH7372
AH7372_U.S. NATIONAL GRID SPATIAL ADDRESS: 18SUJ2337806852(NAD 83)
AH7372_MARKER: DD = SURVEY DISK
AH7372_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
AH7372_STAMPING: 6H 90002
AH7372_MARK LOGO: NPS
AH7372_PROJECTION: FLUSH
AH7372_MAGNETIC: N = NO MAGNETIC MATERIAL
AH7372_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
AH7372+STABILITY: SURFACE MOTION
AH7372
AH7372 HISTORY - Date Condition Report By
AH7372 HISTORY - UNK MONUMENTED NPS
AH7372 HISTORY - 19980928 GOOD NGS
AH7372 HISTORY - 19991122 GOOD NGS
AH7372 HISTORY - 20090317 MARK NOT FOUND GEOCAC
AH7372
AH7372 STATION DESCRIPTION
AH7372
AH7372'DESCRIBED BY NATIONAL GEODETIC SURVEY 1998 (RLA)
AH7372'IN WASHINGTON, DC AT THE SOUTH END OF THE ELLIPSE, NEAR ELLIPSE DRIVE,
AH7372'A CONCRETE POST FLUSH WITH THE GROUND, 1.5 M (4.8 FT) NORTH-NORTHWEST
AH7372'OF THE NORTH EDGE OF SIDEWALK, 11.9 M (39.0 FT) NORTH-NORTHWEST OF
AH7372'SOUTH EDGE OF THE NORTH CURB, 20.0 M (65.6 FT) NORTHWEST OF A LAMP
AH7372'POLE (UNMARKED), 20.4 M (67.0 FT) NORTHEAST OF A LAMP POLE ALSO
AH7372'UNMARKED, 19.0 M (62.2 FT) NORTH-NORTHWEST OF CENTERLINE OF ELLIPSE
AH7372'DRIVE, AND 43.7 M (143.3 FT) SOUTH OF A 2.5 FT DIAMETER STEEL MANHOLE
AH7372'COVER FOR THE BELL TELEPHONE SYSTEM. NOTE--DISK HAS BEEN HIT BY
AH7372'MACHINERY AND ONLY PART OF STAMPING IS LEGIBLE.
AH7372
AH7372 STATION RECOVERY (1999)
AH7372
AH7372'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1999 (RWA)
AH7372'RECOVERED AS DESCRIBED.
AH7372
AH7372 STATION RECOVERY (2009)
AH7372
AH7372'RECOVERY NOTE BY GEOCACHING 2009 (SMC)
AH7372'WE LOOKED ALL OVER, AND EVEN WITH THE BENEFIT OF ADJUSTED GPS
AH7372'COORDINATES AND A GREAT DESCRIPTION, COULD NOT FIND THE MARK. WE
AH7372'THINK IT IS PROBABLY BURIED UNDER THE DIRT AND GRASS IN THE PARK.
*** retrieval complete.
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