HT2271 ***********************************************************************
HT2271  DESIGNATION -  M 6 C OF SF
HT2271  PID         -  HT2271
HT2271  STATE/COUNTY-  CA/SAN FRANCISCO
HT2271  USGS QUAD   -  SAN FRANCISCO SOUTH (1995)
HT2271
HT2271                         *CURRENT SURVEY CONTROL
HT2271  ___________________________________________________________________
HT2271* NAD 83(1986)-  37 43 46.     (N)    122 28 29.     (W)     SCALED
HT2271* NAVD 88     -        63.620  (meters)     208.73   (feet)  ADJUSTED
HT2271  ___________________________________________________________________
HT2271  GEOID HEIGHT-         -32.59  (meters)                     GEOID99
HT2271  DYNAMIC HT  -          63.578 (meters)     208.59  (feet)  COMP
HT2271  MODELED GRAV-     979,966.0   (mgal)                       NAVD 88
HT2271
HT2271  VERT ORDER  -  FIRST     CLASS I
HT2271
HT2271.The horizontal coordinates were scaled from a topographic map and have
HT2271.an estimated accuracy of +/- 6 seconds.
HT2271
HT2271.The orthometric height was determined by differential leveling
HT2271.and adjusted by the National Geodetic Survey in June 1991.
HT2271
HT2271.The geoid height was determined by GEOID99.
HT2271
HT2271.The dynamic height is computed by dividing the NAVD 88
HT2271.geopotential number by the normal gravity value computed on the
HT2271.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
HT2271.degrees latitude (G = 980.6199 gals.).
HT2271
HT2271.The modeled gravity was interpolated from observed gravity values.
HT2271
HT2271;                    North         East    Units  Estimated Accuracy
HT2271;SPC CA 3     -   638,280.    1,825,950.      MT  (+/- 180 meters Scaled)
HT2271
HT2271                          SUPERSEDED SURVEY CONTROL
HT2271
HT2271  NGVD 29     -        62.779  (m)          205.97   (f) ADJUSTED    1 1
HT2271
HT2271.Superseded values are not recommended for survey control.
HT2271.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
HT2271.See file dsdata.txt to determine how the superseded data were derived.
HT2271
HT2271_MARKER: DD = SURVEY DISK
HT2271_SETTING: 30 = SIDEWALK
HT2271_STAMPING: M 6 1974
HT2271_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
HT2271
HT2271  HISTORY     - Date     Condition        Recov. By
HT2271  HISTORY     - 1974     MONUMENTED       CA3290
HT2271  HISTORY     - 1977     GOOD             NGS
HT2271
HT2271                          STATION DESCRIPTION
HT2271
HT2271''DESCRIBED BY NATIONAL GEODETIC SURVEY 1977
HT2271''IN SAN FRANCISCO.
HT2271''AT SAN FRANCISCO, ON 19 TH AVE AT STONETOWN MALL, A DISK SET IN THE
HT2271''SIDEWALK IN THE CENTER OF A PAINTED WHITE CROSS, 10 FEET SOUTH OF
HT2271''THE STEPS LEADING TO THE MALL AT THE NORTH END, AND 5 FEET WEST OF THE
HT2271''WEST CURB OF 19 TH AVE.