AG1233 ***********************************************************************
AG1233  DESIGNATION -  123 ERS
AG1233  PID         -  AG1233
AG1233  STATE/COUNTY-  FL/LEE
AG1233  USGS QUAD   -  SANIBEL (1987)
AG1233
AG1233                         *CURRENT SURVEY CONTROL
AG1233  ___________________________________________________________________
AG1233* NAD 83(1990)-  26 27 10.55329(N)    082 00 51.35588(W)     ADJUSTED
AG1233* NAVD 88     -         1.17   (+/-2cm)       3.8    (feet)  VERTCON
AG1233  ___________________________________________________________________
AG1233  LAPLACE CORR-          -1.84  (seconds)                    DEFLEC99
AG1233  GEOID HEIGHT-         -23.56  (meters)                     GEOID99
AG1233
AG1233  HORZ ORDER  -  SECOND
AG1233  VERT ORDER  -  THIRD ? (See Below)
AG1233
AG1233.The horizontal coordinates were established by classical geodetic methods
AG1233.and adjusted by the National Geodetic Survey in May 1991.
AG1233
AG1233.The NAVD 88 height was computed by applying the VERTCON shift value to
AG1233.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
AG1233.The vertical order pertains to the superseded datum.
AG1233
AG1233.The Laplace correction was computed from DEFLEC99 derived deflections.
AG1233
AG1233.The geoid height was determined by GEOID99.
AG1233
AG1233;                    North         East     Units   Scale      Converg.
AG1233;SPC FL W     -   234,792.920   198,577.374   MT  0.99994120 -0 00 22.9
AG1233;UTM  17      - 2,926,243.426   398,883.871   MT  0.99972623 -0 27 06.7
AG1233
AG1233                          SUPERSEDED SURVEY CONTROL
AG1233
AG1233  NAD 83(1986)-  26 27 10.55204(N)    082 00 51.36974(W) AD(       ) 2
AG1233  NAD 27      -  26 27 09.26079(N)    082 00 52.04138(W) AD(       ) 2
AG1233  NGVD 29     -         1.53   (m)            5.0    (f) LEVELING    3
AG1233
AG1233.Superseded values are not recommended for survey control.
AG1233.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
AG1233.See file dsdata.txt to determine how the superseded data were derived.
AG1233
AG1233_MARKER: DB = BENCH MARK DISK
AG1233_SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT
AG1233_STAMPING: 123 ERS 1952
AG1233_MAGNETIC: O = OTHER; SEE DESCRIPTION
AG1233_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
AG1233
AG1233  HISTORY     - Date     Condition        Recov. By
AG1233  HISTORY     - 1952     MONUMENTED       USGS
AG1233  HISTORY     - 1967     GOOD             CEJA
AG1233  HISTORY     - 19840619 GOOD             NGS
AG1233  HISTORY     - 19960314 MARK NOT FOUND   USPSQD
AG1233
AG1233                          STATION DESCRIPTION
AG1233
AG1233''DESCRIBED BY US GEOLOGICAL SURVEY 1952 (RHT)
AG1233''STATION IS LOCATED ON THE EAST END OF SANIBEL ISLAND UNDER THE
AG1233''POINT YBEL LIGHTHOUSE.  STATION IS 9 FEET EAST NORTHEAST OF THE
AG1233''WEST LEG OF LIGHTHOUSE AND 9 FEET WEST SOUTHWEST OF THE APPROXIMATE
AG1233''CENTER OF LIGHTHOUSE.  THE MARK IS OF CONCRETE, ABOUT 6 INCHES IN
AG1233''DIAMETER AND PROJECTS ABOUT 1 INCH.  THE DISK WHICH IS A STANDARD
AG1233''U.S.G.S. BENCH MARK IS STAMPED 123 ERS 1952.
AG1233''
AG1233''A TRAVERSE CONNECTION WAS MADE TO STATION FROM TRIANGULATION
AG1233''STATION SANI 2 AND THE DISTANCE IS 33.191 METERS OR 108.90 FEET
AG1233''SOUTHEAST.
AG1233''
AG1233''TO REACH FROM THE SANIBEL ISLAND POST OFFICE GO SOUTH FOR 0.05
AG1233''MILE TO CROSSROADS.  TURN LEFT AND GO EASTERLY ON MAIN SAND ROAD
AG1233''FOR 0.45 MILE TO LIGHTHOUSE AND STATION AS DESCRIBED.
AG1233
AG1233                          STATION RECOVERY (1967)
AG1233
AG1233''RECOVERY NOTE BY C E JOHNSON ASSOC 1967
AG1233''STATION WAS SEARCHED FOR AND FOUND IN EXCELLENT CONDITION.
AG1233
AG1233                          STATION RECOVERY (1984)
AG1233
AG1233''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984 (CLN)
AG1233''RECOVERED IN GOOD CONDITION.
AG1233
AG1233                          STATION RECOVERY (1996)
AG1233
AG1233''RECOVERY NOTE BY US POWER SQUADRON 1996
AG1233''MARK NOT FOUND.