WHIDBEY ISLAND 1 (whd1), WASHINGTON                             

 All positions and velocities are for the L1 phase center of the GPS antenna.
 The antenna used is an Ashtech Geodetic L1-L2 Rev. D [Part No. 700829 (3)].         
 The L2 phase center is 0.029 m below the L1 phase center.
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|                                                                         |
| POSITION: ITRF94 (EPOCH 1996.0)                                         |
|   Computed in Apr., 1996 using 70 days of data.                         |
|      X = -2295684.965 m     latitude    =  48 18 45.78052 N             |
|      Y = -3576426.517 m     longitude   = 122 41 46.11137 W             |
|      Z =  4740083.156 m     ellipsoid height =    13.964 m              |
|                                                                         |
| VELOCITY: ITRF94                                                        |
|   Computed from NAD 83 value using a 3-parameter transformation.        |
|      VX = -0.0172 m/yr      northward = -0.0150 m/yr                    |
|      VY = -0.0022 m/yr      eastward  = -0.0133 m/yr                    |
|      VZ = -0.0100 m/yr      upward    =  0.0000 m/yr                    |
|_________________________________________________________________________|
|                                                                         |
| POSITION: NAD 83 (EPOCH 1996.0)                                         |
|   Computed from ITRF94 value using a 7-parameter transformation.        |
|      X = -2295684.420 m     latitude    =  48 18 45.75959 N             |
|      Y = -3576427.703 m     longitude   = 122 41 46.05799 W             |
|      Z =  4740082.973 m     ellipsoid height =    14.295 m              |
|                                                                         |
| VELOCITY: NAD 83                                                        |
|   Predicted in Apr., 1996.                                              |
|      VX =  0.0000 m/yr      northward =  0.0000 m/yr                    |
|      VY =  0.0000 m/yr      eastward  =  0.0000 m/yr                    |
|      VZ =  0.0000 m/yr      upward    =  0.0000 m/yr                    |
|_________________________________________________________________________|

* Latitude, longitude and ellipsoid height are computed from
  their corresponding cartesian coordinates using dimensions
  for the GRS 80 ellipsoid: semi-major axis = 6,378,137.0 meters
                            flattening = 1 / 298.257222101 .

* WARNING:  Mixing of antenna types can lead to errors of up to
  10 cm in height unless antenna-phase-center variation is
  properly modeled.

* For additional information about the interpretation and/or
  derivation of these positions and velocities, consult the
  subdirectory "derivation" under the "coord" directory.
  For additional information on the relation of the GPS
  antenna to other relevant points at the site and on GPS
  equipment, consult the "station_log" directory.

* These updated positions and velocities were released on
  May 10, 1996.  For previously published positions and 
  velocities, consult the subdirectory "old_coord" under
  the "coord" directory.