MY2356 ***********************************************************************
MY2356  DESIGNATION -  BOSTON PRUDENTIAL BLDG MAST
MY2356  PID         -  MY2356
MY2356  STATE/COUNTY-  MA/SUFFOLK
MY2356  USGS QUAD   -
MY2356
MY2356                         *CURRENT SURVEY CONTROL
MY2356  ___________________________________________________________________
MY2356* NAD 83(1996)-  42 20 49.77606(N)    071 04 57.08497(W)     ADJUSTED
MY2356* NAVD 88     -       220.     (meters)     722.     (feet)  SCALED
MY2356  ___________________________________________________________________
MY2356  LAPLACE CORR-           2.93  (seconds)                    DEFLEC99
MY2356  GEOID HEIGHT-         -27.77  (meters)                     GEOID99
MY2356
MY2356  HORZ ORDER  -  THIRD
MY2356
MY2356.The horizontal coordinates were established by classical geodetic methods
MY2356.and adjusted by the National Geodetic Survey in June 1998.
MY2356
MY2356.The orthometric height was scaled from a topographic map.
MY2356
MY2356.The Laplace correction was computed from DEFLEC99 derived deflections.
MY2356
MY2356.The geoid height was determined by GEOID99.
MY2356
MY2356;                    North         East     Units   Scale      Converg.
MY2356;SPC MA M     - 2,951,810.15    769,021.94   sFT  0.99996781 +0 16 49.6
MY2356;SPC MA M     -   899,713.533   234,398.355   MT  0.99996781 +0 16 49.6
MY2356;UTM  19      - 4,690,422.566   328,467.405   MT  0.99996203 -1 24 11.4
MY2356
MY2356                          SUPERSEDED SURVEY CONTROL
MY2356
MY2356  NAD 83(1996)-  42 20 49.77472(N)    071 04 57.08443(W) AD(       ) 4
MY2356  NAD 83(1992)-  42 20 49.77471(N)    071 04 57.08449(W) AD(       ) 4
MY2356  NAD 83(1992)-  42 20 49.77874(N)    071 04 57.08286(W) AD(       ) 4
MY2356  NAD 83(1986)-  42 20 49.77814(N)    071 04 57.08382(W) AD(       ) 4
MY2356
MY2356.Superseded values are not recommended for survey control.
MY2356.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
MY2356.See file dsdata.txt to determine how the superseded data were derived.
MY2356
MY2356_MARKER: 42 = RADIO/TV MAST
MY2356_MAGNETIC: N = NO MAGNETIC MATERIAL
MY2356_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD
MY2356+STABILITY: POSITION/ELEVATION WELL
MY2356
MY2356  HISTORY     - Date     Condition        Recov. By
MY2356  HISTORY     - 1978     FIRST OBSERVED   MAGS
MY2356  HISTORY     - 1978     GOOD             MAGS
MY2356  HISTORY     - 19840326 GOOD             MAGS
MY2356  HISTORY     - 19910205 GOOD             MAGS
MY2356
MY2356                          STATION DESCRIPTION
MY2356
MY2356''DESCRIBED BY MASSACHUSETTS GEODETIC SURVEY 1978 (WJK)
MY2356''THE BOSTON PRUMAST IS LOCATED IN DOWNTOWN BOSTON, ON BOYLSTON
MY2356''STREET AND ATOP THE PRUDENTIAL INSURANCE COMPANY BUILDING.
MY2356''
MY2356''THE BOSTON PRUMAST IS LOCATED IN DOWNTOWN BOSTON.
MY2356''
MY2356''THE STATION IS THE TOP CENTER OF A 30 FEET TALL MAST, ATOP THE
MY2356''PRUDENTIAL BUILDING AND IN ABOUT THE TOP CENTER OF THE BUILDING.
MY2356''
MY2356''DESCRIBED BY W.J. KENNEDY, MAGS.
MY2356
MY2356                          STATION RECOVERY (1978)
MY2356
MY2356''RECOVERY NOTE BY MASSACHUSETTS GEODETIC SURVEY 1978
MY2356''RECOVERED IN GOOD CONDITION.
MY2356
MY2356                          STATION RECOVERY (1984)
MY2356
MY2356''RECOVERY NOTE BY MASSACHUSETTS GEODETIC SURVEY 1984
MY2356''RECOVERED IN GOOD CONDITION.
MY2356
MY2356                          STATION RECOVERY (1991)
MY2356
MY2356''RECOVERY NOTE BY MASSACHUSETTS GEODETIC SURVEY 1991
MY2356''RECOVERED IN GOOD CONDITION.