! SAMPLE: 
! 2D Geodetic Network
! Use Approx Hgt For Each Station
! Azimuth, Zenith, Chord (Slope Distance) Obs




! Define datum
! Datum is used to correct for curvature corrections, mark to mark reductions, etc.
! Datum Name; Semi-Major Axis; 1.0 / Flattening
_DATUM; NAD 83; 6378137.000000; 298.257222101


! Define the Units used in this file
! M - meters, U - US Feet, I - International Feet, C - Chains
! D - DMS, DD - Decimal Degrees, G - Grads (Gons), 
! Note: Lat and Lon must always be in DMS format (e.g., 100-30-40.1234 is entered as 100.30401234)
_UNITS; M; D




! Station to be fixed in Grid North and East
_LAT_NORTH_FIX;   AJAX
_LON_EAST_FIX;    AJAX




! _ADJUST_ keywords
! Keywords starting with _ADJUST_ are used in the Adjust From File option; they are ignored during Import.

! Indicates the type of adjustment (2D Local)
_ADJUST_2D_LATLON


! Use the ellipsoidal height fields
_ADJUST_USE_ELLIPHGT


! Fix the ellipsoidal height field for each station (good when in terrain that varies greatly in height).
! These station heights can be +- several meters from their true values. The alternative to this approach
! is _ADJUST_MEAN_2DHGT which uses a single mean project height.
_ADJUST_2D_KNOWN_HGT


! The threshold for comparing each observation standardized residual against.
! If the absolute value of an observation standardized residual is greater
! than this value, the observation is marked as a possible outlier.
!
! When set to ZERO, Columbus calculates the cutoff using the Tau Statistic.
! ZERO is the default, so we could have left this setting out of this file.
_ADJUST_STANRES_THRESHOLD;	0.0


! Grid Zone (see list of all grid zones on our web site)
_ADJUST_GRID;  COLORADO,N,0501,L2




! Define all stations, since we are using an approximate height at each station
!           Name;    Lat;     Lon;     OrthoHgt;   EllipHgt;    North;  East;  NorthSD;  EastSD;  HgtSD;  CorrNE;  CorrNH;  CorrEH;  DeflNS;  DeflEW
_STA_COORD; AJAX;    40.00;  -108.0;   0;          3000.0;      0;      0;     0.001;    0.001;   0.001;  0;       0;       0;       0;       0
_STA_COORD; BLANCA;   0;        0;     0;          3250.0;      0;      0;     0.001;    0.001;   0.001;  0;       0;       0;       0;       0
_STA_COORD; CASTLE;   0;        0;     0;          3502.0;      0;      0;     0.001;    0.001;   0.001;  0;       0;       0;       0;       0
_STA_COORD; DONNER;   0;        0;     0;          3444.0;      0;      0;     0.001;    0.001;   0.001;  0;       0;       0;       0;       0




! Observations
!             At Name;  To Name;  Azimuth;     Az SD;   Zenith;   Zenith SD;   Chord (Slope);  Chord SD;  Instr Hgt;  Targ Hgt
_OBS_AZ_SET;  AJAX;     BLANCA;    21.0124;    3.0;     82.4930;  5.0;         1998.660;       0.015;      3.0;        3.0
_OBS_AZ_SET;  CASTLE;   AJAX;     293.5820;    3.0;    129.2659;  5.0;          788.750;       0.005;      2.0;        3.0
_OBS_AZ_SET;  CASTLE;   BLANCA;     4.1326;    5.0;     96.5034;  5.0;         2119.234;       0.007;      0.0;        0.0

_OBS_AZ_SET;  BLANCA;   DONNER;   198.1553;    3.0;     85.5135;  5.0;         2685.140;       0.012;      6.0;        7.0
_OBS_AZ_SET;  DONNER;   AJAX;      10.2700;    3.0;    122.0930;  5.0;          831.400;       0.008;     20.0;       21.0
_OBS_AZ_SET;  DONNER;   CASTLE;    56.5830;    3.0;     85.4926;  5.0;          818.300;       0.009;     10.0;       11.0