AE9189 ***********************************************************************
AE9189  DESIGNATION -  F 550.3
AE9189  PID         -  AE9189
AE9189  STATE/COUNTY-  IA/JOHNSON
AE9189  USGS QUAD   -  SWISHER (1994)
AE9189
AE9189                         *CURRENT SURVEY CONTROL
AE9189  ___________________________________________________________________
AE9189* NAD 83(1986)-  41 47 48.     (N)    091 38 33.     (W)     SCALED
AE9189* NAVD 88     -       217.899  (meters)     714.89   (feet)  ADJUSTED
AE9189  ___________________________________________________________________
AE9189  GEOID HEIGHT-         -32.38  (meters)                     GEOID99
AE9189  DYNAMIC HT  -         217.816 (meters)     714.62  (feet)  COMP
AE9189  MODELED GRAV-     980,234.3   (mgal)                       NAVD 88
AE9189
AE9189  VERT ORDER  -  SECOND    CLASS I
AE9189
AE9189.The horizontal coordinates were scaled from a topographic map and have
AE9189.an estimated accuracy of +/- 6 seconds.
AE9189
AE9189.The orthometric height was determined by differential leveling
AE9189.and adjusted by the National Geodetic Survey in September 2000.
AE9189
AE9189.The geoid height was determined by GEOID99.
AE9189
AE9189.The dynamic height is computed by dividing the NAVD 88
AE9189.geopotential number by the normal gravity value computed on the
AE9189.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
AE9189.degrees latitude (g = 980.6199 gals.).
AE9189
AE9189.The modeled gravity was interpolated from observed gravity values.
AE9189
AE9189;                    North         East    Units  Estimated Accuracy
AE9189;SPC IA S     -   201,170.      654,370.      MT  (+/- 180 meters Scaled)
AE9189
AE9189                          SUPERSEDED SURVEY CONTROL
AE9189
AE9189.No superseded survey control is available for this station.
AE9189
AE9189_MARKER: DB = BENCH MARK DISK
AE9189_SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND
AE9189_STAMPING: CV F-550.3 1980
AE9189_MAGNETIC: M = MARKER EQUIPPED WITH BAR MAGNET
AE9189_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
AE9189_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
AE9189+SATELLITE: SATELLITE OBSERVATIONS - January 08, 1998
AE9189
AE9189  HISTORY     - Date     Condition        Recov. By
AE9189  HISTORY     - 1980     MONUMENTED       USE
AE9189  HISTORY     - 19980108 GOOD             NGS
AE9189
AE9189                          STATION DESCRIPTION
AE9189
AE9189''DESCRIBED BY NATIONAL GEODETIC SURVEY 1998 (GAS)
AE9189''1.3 KM (0.80 MI) NORTHWESTERLY ALONG NORTH DUBUQUE STREET FROM THE
AE9189''POST OFFICE IN NORTH LIBERTY, THENCE 5.3 KM (3.30 MI) NORTHERLY ALONG
AE9189''STATE HIGHWAY 965, 39.2 M (128.6 FT) SOUTHEAST OF A UTILITY POLE, 31.2
AE9189''M (102.4 FT) NORTHEAST OF THE HIGHWAY CENTERLINE, 17.3 M (56.8 FT)
AE9189''NORTHEAST OF THE NORTHWEST END OF A CULVERT UNDER CURTIS BRIDGE ROAD,
AE9189''13.9 M (45.6 FT) NORTHWEST OF THE ROAD CENTER, 1.0 M (3.3 FT) BELOW
AE9189''THE LEVEL OF THE HIGHWAY, AND 0.1 M (0.3 FT) NORTH OF A WITNESS POST.
AE9189''NOTE--THE DISK IS ENCASED IN A METAL PIPE AND IS FLUSH WITH THE GROUND
AE9189''SURFACE.