! See Appendix A. Modify orthometric height field when this file is loaded to maintain the relationship:
! Ellip Hgt = Ortho Hgt + Geoid Hgt ---- That is the capital letter O (Ortho) not ZERO.
$HGT_UPDATE
O


! Stations with known NAD 83 coordinates (lat, lon, ellipsoid hgt)
$DATUM
  NAD 83
  6378137.000000
  298.257222101


! Units of measure (e.g., linear units in Meters)
$UNITS
  M
  D
  1


! Control station NAD 83 coordinates
! Station Names can be a maximum of 15 characters in length
! Station Name; Lat; Lat SD; Long; Long SD; Ortho Hgt; Ortho Hgt SD; Geoid Hgt; Geoid Hgt SD; Ellip Hgt; Ellip Hgt SD; Defl NS; Defl NS SD; Defl EW; Defl EW SD 
$GEO_COMPACT; A; 37.300100019; 0.0039; -118.372699967; 0.0044; 0; 0; 0; 0; 1778.98; 0.0051; 0; 0; 0; 0
$GEO_COMPACT; B; 37.314799862; 0.0047; -118.384600124; 0.0043; 0; 0; 0; 0; 2046.10; 0.0049; 0; 0; 0; 0
$GEO_COMPACT; C; 37.301099922; 0.0048; -118.401999995; 0.0039; 0; 0; 0; 0; 3197.23; 0.0043; 0; 0; 0; 0
$GEO_COMPACT; D; 37.311399950; 0.0042; -118.374300099; 0.0047; 0; 0; 0; 0; 1976.05; 0.0044; 0; 0; 0; 0


! Stations with known NAD 83 coordinates that will be transformed to NAD 27
$GEO_COMPACT; 1; 37.311903215; 0.0044; -118.381721657; 0.0048; 0; 0; 0; 0; 1988.22; 0.0035; 0; 0; 0; 0
$GEO_COMPACT; 2; 37.303316385; 0.0042; -118.390304483; 0.0041; 0; 0; 0; 0; 2118.01; 0.0053; 0; 0; 0; 0
$GEO_COMPACT; 3; 37.301727135; 0.0041; -118.380501256; 0.0037; 0; 0; 0; 0; 1895.37; 0.0049; 0; 0; 0; 0



! Stations with known NAD 27 coordinates (lat, lon, ellipsoid hgt)
$DATUM
  NAD 27
  6378206.400000
  294.978698214


! Units of measure (e.g., linear units in Meters)
$UNITS
  M
  D
  1


! Control station NAD 27 coordinates
$GEO_COMPACT; A; 37.300124666; 0.0045; -118.372355680; 0.0049; 0; 0; 0; 0; 1803.90; 0.0053; 0; 0; 0; 0
$GEO_COMPACT; B; 37.314824417; 0.0052; -118.384255531; 0.0049; 0; 0; 0; 0; 2071.05; 0.0042; 0; 0; 0; 0
$GEO_COMPACT; C; 37.301124431; 0.0044; -118.401655217; 0.0053; 0; 0; 0; 0; 3222.17; 0.0048; 0; 0; 0; 0
$GEO_COMPACT; D; 37.311424558; 0.0042; -118.373955717; 0.0047; 0; 0; 0; 0; 2001.02; 0.0045; 0; 0; 0; 0